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

81013561 (number)

81013561 is an odd 8-digits composite number following 81013560 and preceding 81013562. In scientific notation, it is written as 8.1013561 × 10^7. The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors. There are 79731552 positive integers (up to 81013561) that are relatively prime to 81013561.

Interesting facts

81013561 has 8 divisors, whose sum is 82303200
The reverse of 81013561 is 16531018
Previous prime number is 283

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7

Name

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

Notation

Scientific notation	8.1013561 × 10^7
Engineering notation	8.1013561 × 10^6

Prime Factorization of 81013561

Prime Factorization 83 × 283 × 3449

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81013561	Product of the distinct prime numbers

The prime factorization of 81013561 is 83 × 283 × 3449. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 4, 31, 79, 82, 705, 4233, 5600, 61131, 56642, 628302, 350239, 9994514, 4988837, 59627412, 91909357, 515841490, 871564571, 7146453447, 1470744672

Basic calculations (n = 81013561)

Multiplication

n×y

n×2	162027122
n×3	243040683
n×4	324054244
n×5	405067805

Division

n÷y

n÷2	40506780.5
n÷3	27004520.333333
n÷3	20253390.25
n÷5	16202712.2

Exponentiation

n^y

n²	6563197065900721
n³	5.3170796585337E+23
n⁴	4.3075555725848E+31
n⁵	3.4897041614049E+39

Nth Root

^y√n

²√n	9000.7533573585
³√n	432.69901585153
⁴√n	94.872300263873
⁵√n	38.16906701897

Divisors of 81013561

1, 83, 283, 3449, 23489, 286267, 976067, 81013561

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	-81013560	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 81013561 can be divided by 8 positive divisors. The sum of these divisors (counting 81013561) is 1, the average is 0.125.

Base conversion 81013561

Base	System	Value
2	Binary	100110101000010101100111001
3	Ternary	12122102220201021
4	Quaternary	10311002230321
5	Quinary	131214413221
6	Senary	12012222441
8	Octal	465025471
10	Decimal	81013561
12	Duodecimal	2316aa21
16	Hexadecimal	4d42b39
20	Vigesimal	1566di1
36	Base36	1c8egp

Cryptographic Hash Functions

md5	591c907bf97fd8e3de2acc74fecc48fe
sha1	0584663c5e551cc5f687221ce8c8383b51914a75
sha256	d429deec974950f2f52bb610a49ff42079c86d2a026b9a91c639342d5938dbff
sha512	04976a7795970c52c13eb0bfb2756337ac6d55e1df00c1de59d3e2ed12fbad03941d0fdeed35a45224e8f308244f16c79daf4d4bb15b28b848e91ee9cd1c7a8f
ripemd-160	f8bb968c2f541a2dd27fa2d238ae5c0ef7536e7c

81013561 as geometric shapes

Circle

Radius = n

Diameter	162027122
Circumference	509023216.1575
Area	2.0618891686296E+16

Sphere

Radius = n

Volume	2.2272131191735E+24
Surface area	8.2475566745183E+16
Circumference	509023216.1575

Square

Length = n

Perimeter	324054244
Area	6563197065900721
Diagonal	114570476.70234

Cube

Length = n

Surface area	39379182395404326
Volume	5.3170796585337E+23
Space diagonal	140319603.75408

Equilateral Triangle

Length = n

Perimeter	243040683
Area	2.8419476945568E+15
Altitude	70159801.87704

Triangular Pyramid

Length = n

Surface area	2.8419476945568E+15
Volume	6.266238471097E+22
Height	38190158.90078