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

81551138 (number)

81551138 is an even 8-digits composite number following 81551137 and preceding 81551139. In scientific notation, it is written as 8.1551138 × 10^7. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 40515696 positive integers (up to 81551138) that are relatively prime to 81551138.

Interesting facts

81551138 has 8 divisors, whose sum is 123106332
The reverse of 81551138 is 83115518
Previous prime number is 157

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5

Name

Name	eighty-one million five hundred fifty-one thousand one hundred thirty-eight

Notation

Scientific notation	8.1551138 × 10^7
Engineering notation	8.1551138 × 10^6

Prime Factorization of 81551138

Prime Factorization 2 × 157 × 259717

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81551138	Product of the distinct prime numbers

The prime factorization of 81551138 is 2 × 157 × 259717. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 5, 70, 27, 28, 386, 1539, 6408, 22056, 86354, 112420, 921532, 3553957, 3800678, 65880788, 98494722, 879619788, 623416441, 3226891386, 1204492188

Basic calculations (n = 81551138)

Multiplication

n×y

n×2	163102276
n×3	244653414
n×4	326204552
n×5	407755690

Division

n÷y

n÷2	40775569
n÷3	27183712.666667
n÷3	20387784.5
n÷5	16310227.6

Exponentiation

n^y

n²	6650588109095044
n³	5.4236302866597E+23
n⁴	4.4230322196836E+31
n⁵	3.6070331092587E+39

Nth Root

^y√n

²√n	9030.5668703576
³√n	433.65398528662
⁴√n	95.029294800906
⁵√n	38.219588353725

Divisors of 81551138

1, 2, 157, 314, 259717, 519434, 40775569, 81551138

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	-81551137	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 81551138 can be divided by 8 positive divisors. The sum of these divisors (counting 81551138) is 1, the average is 0.125.

Base conversion 81551138

Base	System	Value
2	Binary	100110111000101111100100010
3	Ternary	12200110020010112
4	Quaternary	10313011330202
5	Quinary	131334114023
6	Senary	12031531322
8	Octal	467057442
10	Decimal	81551138
12	Duodecimal	23389b42
16	Hexadecimal	4dc5f22
20	Vigesimal	159dhgi
36	Base36	1cjx9e

Cryptographic Hash Functions

md5	dd9435ea19f25bd4ffd3d6d68100b2b1
sha1	7b264df928595469ee7d69040b44bc99cacacd6b
sha256	aa6e865f73ce2dc20595e77abbd24748e5353e6b66eb6866d88a2fd74858e157
sha512	0fb21d54ea04af957398dd0cfa09a0b057e035822349e43f67b8d62ded83edd712399f2d3d08d413854a5db1a70f30b7c3741e79f161e0d215b005351451eb7e
ripemd-160	c701cb52ebd1a48bf2f758db1f8e5c4d40430eb6

81551138 as geometric shapes

Circle

Radius = n

Diameter	163102276
Circumference	512400912.06537
Area	2.0893438745585E+16

Sphere

Radius = n

Volume	2.2718449419143E+24
Surface area	8.3573754982338E+16
Circumference	512400912.06537

Square

Length = n

Perimeter	326204552
Area	6650588109095044
Diagonal	115330725.38656

Cube

Length = n

Surface area	39903528654570264
Volume	5.4236302866597E+23
Space diagonal	141250714.43106

Equilateral Triangle

Length = n

Perimeter	244653414
Area	2.8797891262915E+15
Altitude	70625357.21553

Triangular Pyramid

Length = n

Surface area	2.8797891262915E+15
Volume	6.3918095905763E+22
Height	38443575.128853