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

81121851 (number)

81121851 is an odd 8-digits composite number following 81121850 and preceding 81121852. In scientific notation, it is written as 8.1121851 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 16 positive divisors. There are 51729480 positive integers (up to 81121851) that are relatively prime to 81121851.

Interesting facts

81121851 has 16 divisors, whose sum is 125406720
The reverse of 81121851 is 15812118
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9

Name

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

Notation

Scientific notation	8.1121851 × 10^7
Engineering notation	8.1121851 × 10^6

Prime Factorization of 81121851

Prime Factorization 3 × 3 × 23 × 3 × 130631

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	9013539	Product of the distinct prime numbers

The prime factorization of 81121851 is 3 × 3 × 23 × 3 × 130631. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 9, 4, 83, 987, 378, 6783, 8707, 1145, 88872, 730567, 469565, 4501296, 343846, 51025063, 18876233, 715182856, 878030186, 4078423453, 2734756951

Basic calculations (n = 81121851)

Multiplication

n×y

n×2	162243702
n×3	243365553
n×4	324487404
n×5	405609255

Division

n÷y

n÷2	40560925.5
n÷3	27040617
n÷3	20280462.75
n÷5	16224370.2

Exponentiation

n^y

n²	6580754709666201
n³	5.3384300302509E+23
n⁴	4.3306332548794E+31
n⁵	3.5130898563797E+39

Nth Root

^y√n

²√n	9006.766956017
³√n	432.89172479882
⁴√n	94.90398809332
⁵√n	38.179265607938

Divisors of 81121851

1, 3, 9, 23, 27, 69, 207, 621, 130631, 391893, 1175679, 3004513, 3527037, 9013539, 27040617, 81121851

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81121850	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81121851 can be divided by 16 positive divisors. The sum of these divisors (counting 81121851) is 1, the average is 0.0625.

Base conversion 81121851

Base	System	Value
2	Binary	100110101011101001000111011
3	Ternary	12122122102021000
4	Quaternary	10311131020323
5	Quinary	131231344401
6	Senary	12014420043
8	Octal	465351073
10	Decimal	81121851
12	Duodecimal	23201623
16	Hexadecimal	4d5d23b
20	Vigesimal	15704cb
36	Base36	1caq0r

Cryptographic Hash Functions

md5	ee835ce508d14fe7970fb8712f1fc477
sha1	e65751adb551ad46b796d36530fb0be003c31b5a
sha256	864bf340019bf12b1c8c5b4752d1252edbc861d2de03501f5365ead3279af629
sha512	bb728b0a3b540637180354a236b28325109e08f135ddb75c91fc92c6d111f7bfef0a772ebcc28bbd03126b57943114304fcf8ba87fce3413b185eab124da45ab
ripemd-160	967880a02b7bb4b74c3850ef977d3495873537e1

81121851 as geometric shapes

Circle

Radius = n

Diameter	162243702
Circumference	509703622.29441
Area	2.0674050650964E+16

Sphere

Radius = n

Volume	2.2361563419652E+24
Surface area	8.2696202603855E+16
Circumference	509703622.29441

Square

Length = n

Perimeter	324487404
Area	6580754709666201
Diagonal	114723621.88901

Cube

Length = n

Surface area	39484528257997206
Volume	5.3384300302509E+23
Space diagonal	140507167.53603

Equilateral Triangle

Length = n

Perimeter	243365553
Area	2.8495503773225E+15
Altitude	70253583.768016

Triangular Pyramid

Length = n

Surface area	2.8495503773225E+15
Volume	6.2914001254672E+22
Height	38241207.296336