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

81321565 (number)

81321565 is an odd 8-digits composite number following 81321564 and preceding 81321566. In scientific notation, it is written as 8.1321565 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 60052800 positive integers (up to 81321565) that are relatively prime to 81321565.

Interesting facts

81321565 has 8 divisors, whose sum is 105092568
The reverse of 81321565 is 56512318
Previous prime number is 13

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

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

Notation

Scientific notation	8.1321565 × 10^7
Engineering notation	8.1321565 × 10^6

Prime Factorization of 81321565

Prime Factorization 5 × 13 × 1251101

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81321565	Product of the distinct prime numbers

The prime factorization of 81321565 is 5 × 13 × 1251101. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 8, 59, 15, 636, 826, 500, 2697, 40739, 70609, 150136, 468380, 9452202, 5901905, 93322106, 6813820, 884008671, 74751407, 6357581848, 8508886217

Basic calculations (n = 81321565)

Multiplication

n×y

n×2	162643130
n×3	243964695
n×4	325286260
n×5	406607825

Division

n÷y

n÷2	40660782.5
n÷3	27107188.333333
n÷3	20330391.25
n÷5	16264313

Exponentiation

n^y

n²	6613196934049225
n³	5.3779552433008E+23
n⁴	4.3734373688518E+31
n⁵	3.5565477126451E+39

Nth Root

^y√n

²√n	9017.8470268684
³√n	433.24667925405
⁴√n	94.962345310488
⁵√n	38.198045840627

Divisors of 81321565

1, 5, 13, 65, 1251101, 6255505, 16264313, 81321565

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	-81321564	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 81321565 can be divided by 8 positive divisors. The sum of these divisors (counting 81321565) is 1, the average is 0.125.

Base conversion 81321565

Base	System	Value
2	Binary	100110110001101111001011101
3	Ternary	12200000120012211
4	Quaternary	10312031321131
5	Quinary	131304242230
6	Senary	12023000421
8	Octal	466157135
10	Decimal	81321565
12	Duodecimal	23299111
16	Hexadecimal	4d8de5d
20	Vigesimal	15853i5
36	Base36	1cf04d

Cryptographic Hash Functions

md5	23fdee080fd76cb99f84e7729800a75e
sha1	7fc4438c06a4ac5fefc63630ee5244f0cbed8399
sha256	7a46dbcfe2f5994f25722a44445e430125d1d9131bd0fc2005192c29ca5b98a1
sha512	0bfdc97d541b8900f67e7a658f8219f18c5ce236a9cb018001e3d7d90e79aa9140e97ee7a9314050843c1ab7b5ab25483214244c76b73248d4237ec79fb15a49
ripemd-160	ecea0a7174932a1a81a0d3b713342e55c2c78ec6

81321565 as geometric shapes

Circle

Radius = n

Diameter	162643130
Circumference	510958462.36485
Area	2.0775970904752E+16

Sphere

Radius = n

Volume	2.2527126244918E+24
Surface area	8.3103883619006E+16
Circumference	510958462.36485

Square

Length = n

Perimeter	325286260
Area	6613196934049225
Diagonal	115006060.13641

Cube

Length = n

Surface area	39679181604295350
Volume	5.3779552433008E+23
Space diagonal	140853082.33101

Equilateral Triangle

Length = n

Perimeter	243964695
Area	2.863598272558E+15
Altitude	70426541.165507

Triangular Pyramid

Length = n

Surface area	2.863598272558E+15
Volume	6.3379810357596E+22
Height	38335353.378802