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

81355985 (number)

81355985 is an odd 8-digits composite number following 81355984 and preceding 81355986. In scientific notation, it is written as 8.1355985 × 10^7. The sum of its digits is 44. It has a total of 3 prime factors and 8 positive divisors. There are 63981424 positive integers (up to 81355985) that are relatively prime to 81355985.

Interesting facts

81355985 has 8 divisors, whose sum is 99282240
The reverse of 81355985 is 58955318
Previous prime number is 59

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8

Name

Name	eighty-one million three hundred fifty-five thousand nine hundred eighty-five

Notation

Scientific notation	8.1355985 × 10^7
Engineering notation	8.1355985 × 10^6

Prime Factorization of 81355985

Prime Factorization 5 × 59 × 275783

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81355985	Product of the distinct prime numbers

The prime factorization of 81355985 is 5 × 59 × 275783. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 4, 88, 71, 978, 898, 9002, 7535, 53529, 57883, 146190, 195241, 9151227, 589777, 5201481, 70408925, 689688037, 24948994, 6211999089, 4572653169

Basic calculations (n = 81355985)

Multiplication

n×y

n×2	162711970
n×3	244067955
n×4	325423940
n×5	406779925

Division

n÷y

n÷2	40677992.5
n÷3	27118661.666667
n÷3	20338996.25
n÷5	16271197

Exponentiation

n^y

n²	6618796295320225
n³	5.3847869212013E+23
n⁴	4.3808464398945E+31
n⁵	3.5640807725136E+39

Nth Root

^y√n

²√n	9019.7552627552
³√n	433.30779566793
⁴√n	94.972392108208
⁵√n	38.201278818739

Divisors of 81355985

1, 5, 59, 295, 275783, 1378915, 16271197, 81355985

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	-81355984	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 81355985 can be divided by 8 positive divisors. The sum of these divisors (counting 81355985) is 1, the average is 0.125.

Base conversion 81355985

Base	System	Value
2	Binary	100110110010110010011010001
3	Ternary	12200002022102122
4	Quaternary	10312112103101
5	Quinary	131311342420
6	Senary	12023424025
8	Octal	466262321
10	Decimal	81355985
12	Duodecimal	232b5015
16	Hexadecimal	4d964d1
20	Vigesimal	15899j5
36	Base36	1cfqoh

Cryptographic Hash Functions

md5	e753c768ac1f45dfdb54cb4610ea236c
sha1	27b4e8085735a5478b9deaaad8c939246d84d34f
sha256	988a000711e73296c52e078618798d1d9d1337e94de4413d431af261c0e7ce87
sha512	4bf8cccf03bf1e15300408a2f65a34d185c584b8a257b824d90901db83ec2465e4beff2c8e3468fd3ebd5d15d5e0a0d6bfb263ddba923fd3ef3686e7c1122b87
ripemd-160	30b4c144f5936ce5109f2044d18ba0410d2c4e88

81355985 as geometric shapes

Circle

Radius = n

Diameter	162711970
Circumference	511174729.60312
Area	2.0793561816985E+16

Sphere

Radius = n

Volume	2.255574271039E+24
Surface area	8.3174247267941E+16
Circumference	511174729.60312

Square

Length = n

Perimeter	325423940
Area	6618796295320225
Diagonal	115054737.36722

Cube

Length = n

Surface area	39712777771921350
Volume	5.3847869212013E+23
Space diagonal	140912699.51981

Equilateral Triangle

Length = n

Perimeter	244067955
Area	2.8660228671108E+15
Altitude	70456349.759906

Triangular Pyramid

Length = n

Surface area	2.8660228671108E+15
Volume	6.3460322453768E+22
Height	38351579.122407