Math question: What is the sum of the digits of the number 1955?

To find the sum of the digits of the number 1955, we add each individual digit: 1 + 9 + 5 + 5 = 20.

Math question: A number is chosen randomly from the set of all four-digit positive integers. What is the probability that the selected number is a multiple of 1955?

To find the probability that a randomly selected number is a multiple of 1955, we need to determine the total number of four-digit positive integers and the count of those divisible by 1955. A four-digit positive integer ranges from 1000 to 9999, so there are 9999 – 1000 + 1 = 9000 four-digit positive integers. To find the number of four-digit positive integers that are divisible by 1955, we divide the total range (9999 – 1000 + 1) by 1955 and get 5. Hence, there are 5 four-digit positive integers that are multiples of 1955. Therefore, the probability of randomly selecting a number that is a multiple of 1955 is 5/9000, which can be simplified to 1/1800. In a simplified fraction, the probability is 1 out of 1800.

Question: The number 1955 can be written as the sum of three consecutive odd numbers. What are these three numbers?

Let's assume the three consecutive odd numbers are x, x+2, and x+4. We can set up the equation: x + (x+2) + (x+4) = 1955. Simplifying the equation, we get 3x + 6 = 1955. Subtracting 6 from both sides gives us 3x = 1949. Finally, dividing both sides by 3 yields x ≈ 649. Therefore, the three numbers are approximately 649, 651, and 653.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

1955 (number)

1955 is an odd 4-digits composite number following 1954 and preceding 1956. In scientific notation, it is written as 1.955 × 10^3. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 1408 positive integers (up to 1955) that are relatively prime to 1955.

Interesting facts

1955 has 8 divisors, whose sum is 2592
The reverse of 1955 is 5591
Previous prime number is 23

Basic properties

Is Prime? no
Number parity odd
Number length 4
Sum of Digits 20
Digital Root 2

Name

Name	one thousand nine hundred fifty-five

Notation

Scientific notation	1.955 × 10^3
Engineering notation	1.955 × 10^3

Prime Factorization of 1955

Prime Factorization 5 × 23 × 17

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	1955	Product of the distinct prime numbers

The prime factorization of 1955 is 5 × 23 × 17. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 5, 92, 26, 766, 567, 4751, 7192, 99623, 39843, 219281, 614680, 4559128, 1100865, 35343684, 40710707, 6457058, 38037617, 9507653448, 6461333133

Basic calculations (n = 1955)

Multiplication

n×y

n×2	3910
n×3	5865
n×4	7820
n×5	9775

Division

n÷y

n÷2	977.5
n÷3	651.66666666667
n÷3	488.75
n÷5	391

Exponentiation

n^y

n²	3822025
n³	7472058875
n⁴	14607875100625
n⁵	28558395821721875

Nth Root

^y√n

²√n	44.215381938868
³√n	12.503998720682
⁴√n	6.6494647858958
⁵√n	4.5522840430094

Divisors of 1955

1, 5, 17, 23, 85, 115, 391, 1955

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-1954	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1955 can be divided by 8 positive divisors. The sum of these divisors (counting 1955) is 1, the average is 0.125.

Base conversion 1955

Base	System	Value
2	Binary	11110100011
3	Ternary	2200102
4	Quaternary	132203
5	Quinary	30310
6	Senary	13015
8	Octal	3643
10	Decimal	1955
12	Duodecimal	116b
16	Hexadecimal	7a3
20	Vigesimal	4hf
36	Base36	1ib

Cryptographic Hash Functions

md5	378a063b8fdb1db941e34f4bde584c7d
sha1	8529267bd09088e4166ab6e4e6894c7e1a85928f
sha256	b53a7292b38e011dbe6efc79c22d028ddd364da2e6b9aa182915572742330ea9
sha512	b9c58b6f284b9b90de0c67eac317e84036d96fe80d6684db7a107a21ce11cf09b584b338c5cdf9a9891bfcf39e7c335ed0b36912bc45a6bbb4a868b7db08ba27
ripemd-160	e40e10210cbed6b82a0b84054e491fd4a01e9de9

1955 as geometric shapes

Circle

Radius = n

Diameter	3910
Circumference	12283.627275536
Area	12007245.661837

Sphere

Radius = n

Volume	31298887025.187
Surface area	48028982.647346
Circumference	12283.627275536

Square

Length = n

Perimeter	7820
Area	3822025
Diagonal	2764.7875144394

Cube

Length = n

Surface area	22932150
Volume	7472058875
Space diagonal	3386.1593287972

Equilateral Triangle

Length = n

Perimeter	5865
Area	1654985.3719496
Altitude	1693.0796643986

Triangular Pyramid

Length = n

Surface area	1654985.3719496
Volume	880590583.32294
Height	921.59583814647