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

81121181 (number)

81121181 is an odd 8-digits composite number following 81121180 and preceding 81121182. In scientific notation, it is written as 8.1121181 × 10^7. The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors. There are 80700672 positive integers (up to 81121181) that are relatively prime to 81121181.

Interesting facts

81121181 has 4 divisors, whose sum is 81541692
The reverse of 81121181 is 18112118
Previous prime number is 193

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5

Name

Name	eighty-one million one hundred twenty-one thousand one hundred eighty-one

Notation

Scientific notation	8.1121181 × 10^7
Engineering notation	8.1121181 × 10^6

Prime Factorization of 81121181

Prime Factorization 193 × 420317

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81121181	Product of the distinct prime numbers

The prime factorization of 81121181 is 193 × 420317. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 1, 39, 69, 768, 744, 2186, 6255, 86132, 39768, 751383, 95018, 9515869, 4650305, 30003307, 19427336, 431706728, 519465112, 8396666645, 3718381070

Basic calculations (n = 81121181)

Multiplication

n×y

n×2	162242362
n×3	243363543
n×4	324484724
n×5	405605905

Division

n÷y

n÷2	40560590.5
n÷3	27040393.666667
n÷3	20280295.25
n÷5	16224236.2

Exponentiation

n^y

n²	6580646006834761
n³	5.3382977581737E+23
n⁴	4.330490186727E+31
n⁵	3.5129447825621E+39

Nth Root

^y√n

²√n	9006.7297616838
³√n	432.89053301859
⁴√n	94.903792135424
⁵√n	38.179202541841

Divisors of 81121181

1, 193, 420317, 81121181

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81121180	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81121181 can be divided by 4 positive divisors. The sum of these divisors (counting 81121181) is 1, the average is 0.25.

Base conversion 81121181

Base	System	Value
2	Binary	100110101011100111110011101
3	Ternary	12122122101100012
4	Quaternary	10311130332131
5	Quinary	131231334211
6	Senary	12014413005
8	Octal	465347635
10	Decimal	81121181
12	Duodecimal	23201165
16	Hexadecimal	4d5cf9d
20	Vigesimal	15702j1
36	Base36	1capi5

Cryptographic Hash Functions

md5	cbd14a9a25125067b0f67e8be0759522
sha1	6b7d81bb6e86e134c4f3876799b15c09e6af50e6
sha256	96304c00f19b78b1d455c19d418b16e3e85a82842b28f2103f182a4fcdd56f4f
sha512	e03f88895bf0804a4fde316cdf58340671ad1f5c9410a1da96123206f8a6fbc38959a6d11dd54cda04b6c98d9070e5788df38085348649b141b7195163fb1d41
ripemd-160	c2dcdf8784d92e0c845df5f668a31fc68d7151a6

81121181 as geometric shapes

Circle

Radius = n

Diameter	162242362
Circumference	509699412.56026
Area	2.0673709150947E+16

Sphere

Radius = n

Volume	2.2361009359671E+24
Surface area	8.2694836603788E+16
Circumference	509699412.56026

Square

Length = n

Perimeter	324484724
Area	6580646006834761
Diagonal	114722674.36592

Cube

Length = n

Surface area	39483876041008566
Volume	5.3382977581737E+23
Space diagonal	140506007.06199

Equilateral Triangle

Length = n

Perimeter	243363543
Area	2.8495033076158E+15
Altitude	70253003.530996

Triangular Pyramid

Length = n

Surface area	2.8495033076158E+15
Volume	6.2912442413293E+22
Height	38240891.455308