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

81572021 (number)

81572021 is an odd 8-digits prime number following 81572020 and preceding 81572022. In scientific notation, it is written as 8.1572021 × 10^7. The sum of its digits is 26. It has a total of 1 prime factors and 2 positive divisors. There are 81572020 positive integers (up to 81572021) that are relatively prime to 81572021.

Interesting facts

81572021 has 2 divisors, whose sum is 81572022
The reverse of 81572021 is 12027518
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8

Name

Name	eighty-one million five hundred seventy-two thousand twenty-one

Notation

Scientific notation	8.1572021 × 10^7
Engineering notation	8.1572021 × 10^6

Prime Factorization of 81572021

Prime Factorization 81572021

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	81572021	Product of the distinct prime numbers

The prime factorization of 81572021 is 81572021. Since it has a total of 1 prime factors.

Most popular turbo-numbers

5, 9, 38, 40, 300, 60, 9492, 1593, 84162, 82695, 915270, 593577, 4084491, 2693674, 12588087, 32493578, 33045743, 425828424, 8701508561, 2013149673

Basic calculations (n = 81572021)

Multiplication

n×y

n×2	163144042
n×3	244716063
n×4	326288084
n×5	407860105

Division

n÷y

n÷2	40786010.5
n÷3	27190673.666667
n÷3	20393005.25
n÷5	16314404.2

Exponentiation

n^y

n²	6653994610024441
n³	5.427797880628E+23
n⁴	4.4275644270234E+31
n⁵	3.6116537842001E+39

Nth Root

^y√n

²√n	9031.7230360546
³√n	433.69099774085
⁴√n	95.035377812974
⁵√n	38.221545550014

Divisors of 81572021

1, 81572021

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	81572022	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	40786011	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	9031.7230914151	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999754818	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81572021 can be divided by 2 positive divisors. The sum of these divisors (counting 81572021) is 81572022, the average is 40786011.

Base conversion 81572021

Base	System	Value
2	Binary	100110111001011000010110101
3	Ternary	12200111021202222
4	Quaternary	10313023002311
5	Quinary	131340301041
6	Senary	12032212125
8	Octal	467130265
10	Decimal	81572021
12	Duodecimal	2339a045
16	Hexadecimal	4dcb0b5
20	Vigesimal	159ga11
36	Base36	1ckddh

Cryptographic Hash Functions

md5	addff2ec4e8bb8228663d9e86978ed45
sha1	69a37dc3f985dee9e7348248f3375d545af3502c
sha256	2c9a5b5920104d4ce75f432eb6417b0501bf9036aa156c4e7896a2f4ffab90fc
sha512	1da7729e638fcc74724fe8a900477efd1d742443d79d43ff6f7c9e560817501553c6b088fa7704a1999fc195e58c8a0f0a9984409028cb533fe3a233e3a77cc7
ripemd-160	c69915b5740ab78f1b6268ae5844318c90a8769e

81572021 as geometric shapes

Circle

Radius = n

Diameter	163144042
Circumference	512532123.82414
Area	2.0904140583879E+16

Sphere

Radius = n

Volume	2.2735906595935E+24
Surface area	8.3616562335515E+16
Circumference	512532123.82414

Square

Length = n

Perimeter	326288084
Area	6653994610024441
Diagonal	115360258.40838

Cube

Length = n

Surface area	39923967660146646
Volume	5.427797880628E+23
Space diagonal	141286884.84808

Equilateral Triangle

Length = n

Perimeter	244716063
Area	2.8812641844629E+15
Altitude	70643442.424038

Triangular Pyramid

Length = n

Surface area	2.8812641844629E+15
Volume	6.3967211471701E+22
Height	38453419.469461