81505500 (number)

81505500 is an even 8-digits composite number following 81505499 and preceding 81505501. In scientific notation, it is written as 8.1505500 × 10^7. The sum of its digits is 24. It has a total of 6 prime factors and 48 positive divisors. There are 21384000 positive integers (up to 81505500) that are relatively prime to 81505500.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred five thousand five hundred

Notation

Scientific notation 8.1505500 × 10^7
Engineering notation 8.1505500 × 10^6

Prime Factorization of 81505500

Prime Factorization 2 × 2 × 75 × 5 × 67 × 811

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40752750
Product of the distinct prime numbers

The prime factorization of 81505500 is 2 × 2 × 75 × 5 × 67 × 811. Since it has a total of 6 prime factors.

Most popular turbo-numbers

1, 10, 24, 15, 495, 651, 2753, 2002, 15729, 71012, 41236, 812513, 1282923, 718702, 85876128, 45855359, 726782887, 588670002, 3925901280, 1831747693

Basic calculations (n = 81505500)

Multiplication

n×y
n×2 163011000
n×3 244516500
n×4 326022000
n×5 407527500

Division

n÷y
n÷2 40752750
n÷3 27168500
n÷3 20376375
n÷5 16301100

Exponentiation

ny
n2 6643146530250000
n3 5.4145297952129E+23
n4 4.4131395822373E+31
n5 3.5969514822004E+39

Nth Root

y√n
2√n 9028.0396543214
3√n 433.57307575314
4√n 95.015996833804
5√n 38.215309673622

Divisors of 81505500

1, 2, 4, 5, 10, 20, 67, 75, 134, 150, 268, 300, 335, 375, 670, 750, 811, 1340, 1500, 1622, 3244, 4055, 5025, 8110, 10050, 16220, 20100, 25125, 50250, 54337, 60825, 100500, 108674, 121650, 217348, 243300, 271685, 304125, 543370, 608250, 1086740, 1216500, 4075275, 8150550, 16301100, 20376375, 40752750, 81505500

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81505499
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81505500 can be divided by 48 positive divisors. The sum of these divisors (counting 81505500) is 1, the average is 0.020833333333333.

Base conversion 81505500

Base System Value
2 Binary 100110110111010110011011100
3 Ternary 12200100220112020
4 Quaternary 10312322303130
5 Quinary 131331134000
6 Senary 12030540140
8 Octal 466726334
10 Decimal 81505500
12 Duodecimal 23367650
16 Hexadecimal 4dbacdc
20 Vigesimal 15983f0
36 Base36 1ciy1o

Cryptographic Hash Functions

md5 a2c518af8bcb312f679318c18c45794c
sha1 c8b1176d9d84d054a42d8d1ccfc9f57008976d9b
sha256 5fa84884ba6da7945fd0d34fc0dc8ff0892b2d39e54973d2641abb313512b0ec
sha512 b75e53ea95e47d17d0a83555e4e3880bf28ef47fefcf07b838a5e27cabdb6bae9dd938bb68c947c8e362fca2324a97f7dcb560b9fb88148f1ddf4d57953b0797
ripemd-160 e07ca83ac361fc89e15181853330e396b823fccc

81505500 as geometric shapes

Circle

Radius = n
Diameter 163011000
Circumference 512114160.05433
Area 2.0870060336154E+16

Sphere

Radius = n
Volume 2.2680329369712E+24
Surface area 8.3480241344616E+16
Circumference 512114160.05433

Square

Length = n
Perimeter 326022000
Area 6643146530250000
Diagonal 115266183.508

Cube

Length = n
Surface area 39858879181500000
Volume 5.4145297952129E+23
Space diagonal 141171667.09631

Equilateral Triangle

Length = n
Perimeter 244516500
Area 2.8765668281295E+15
Altitude 70585833.548153

Triangular Pyramid

Length = n
Surface area 2.8765668281295E+15
Volume 6.3810845585528E+22
Height 38422061.169333