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

81121565 (number)

81121565 is an odd 8-digits composite number following 81121564 and preceding 81121566. In scientific notation, it is written as 8.1121565 × 10^7. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 55626192 positive integers (up to 81121565) that are relatively prime to 81121565.

Interesting facts

81121565 has 8 divisors, whose sum is 111252480
The reverse of 81121565 is 56512118
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

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

Notation

Scientific notation	8.1121565 × 10^7
Engineering notation	8.1121565 × 10^6

Prime Factorization of 81121565

Prime Factorization 5 × 7 × 2317759

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81121565	Product of the distinct prime numbers

The prime factorization of 81121565 is 5 × 7 × 2317759. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 4, 73, 95, 319, 95, 5306, 5380, 91218, 77149, 613258, 673158, 9301894, 8175954, 73476318, 98049901, 58797412, 613783332, 1483357514, 8727027278

Basic calculations (n = 81121565)

Multiplication

n×y

n×2	162243130
n×3	243364695
n×4	324486260
n×5	405607825

Division

n÷y

n÷2	40560782.5
n÷3	27040521.666667
n÷3	20280391.25
n÷5	16224313

Exponentiation

n^y

n²	6580708308049225
n³	5.3383735675746E+23
n⁴	4.3305721835628E+31
n⁵	3.5130279287608E+39

Nth Root

^y√n

²√n	9006.7510790518
³√n	432.89121606956
⁴√n	94.90390444577
⁵√n	38.179238687237

Divisors of 81121565

1, 5, 7, 35, 2317759, 11588795, 16224313, 81121565

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	-81121564	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 81121565 can be divided by 8 positive divisors. The sum of these divisors (counting 81121565) is 1, the average is 0.125.

Base conversion 81121565

Base	System	Value
2	Binary	100110101011101000100011101
3	Ternary	12122122101212102
4	Quaternary	10311131010131
5	Quinary	131231342230
6	Senary	12014414445
8	Octal	465350435
10	Decimal	81121565
12	Duodecimal	23201425
16	Hexadecimal	4d5d11d
20	Vigesimal	15703i5
36	Base36	1capst

Cryptographic Hash Functions

md5	baa788a175e37fa78ce9c51f7f099b2f
sha1	b0fb95f8f95bca6f8fcdc0509bef40bda008ef6d
sha256	80042f00026ae3fcc63372b1c3740e2e3787c68f5cade4cd0c7a6847da10aabb
sha512	708bdd90eeb0010e54916148a6001873ac961326b7b89831934372a95f5139004551fab6911b95fbac4e1c2c75129cd46c01a22e7f051c9405dcacf3f39f817f
ripemd-160	f17fc2aec977c4ac399bad5eb1db852bc054f84d

81121565 as geometric shapes

Circle

Radius = n

Diameter	162243130
Circumference	509701825.30341
Area	2.0673904875985E+16

Sphere

Radius = n

Volume	2.2361326909347E+24
Surface area	8.2695619503939E+16
Circumference	509701825.30341

Square

Length = n

Perimeter	324486260
Area	6580708308049225
Diagonal	114723217.42393

Cube

Length = n

Surface area	39484249848295350
Volume	5.3383735675746E+23
Space diagonal	140506672.1695

Equilateral Triangle

Length = n

Perimeter	243364695
Area	2.849530284833E+15
Altitude	70253336.084751

Triangular Pyramid

Length = n

Surface area	2.849530284833E+15
Volume	6.291333583565E+22
Height	38241072.474644