81185 (number)

81185 is an odd 5-digits composite number following 81184 and preceding 81186. In scientific notation, it is written as 8.1185 × 10^4. The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors. There are 59904 positive integers (up to 81185) that are relatively prime to 81185.

Interesting facts

Basic properties

Name

Name eighty-one thousand one hundred eighty-five

Notation

Scientific notation 8.1185 × 10^4
Engineering notation 8.1185 × 10^3

Prime Factorization of 81185

Prime Factorization 5 × 13 × 1249

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81185
Product of the distinct prime numbers

The prime factorization of 81185 is 5 × 13 × 1249. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 10, 97, 43, 239, 467, 9438, 9331, 9902, 19643, 194026, 713920, 9168613, 4309409, 36027543, 41538876, 115881959, 906592686, 3402951986, 9042964002

Basic calculations (n = 81185)

Multiplication

n×y
n×2 162370
n×3 243555
n×4 324740
n×5 405925

Division

n÷y
n÷2 40592.5
n÷3 27061.666666667
n÷3 20296.25
n÷5 16237

Exponentiation

ny
n2 6591004225
n3 535090678006625
n4 4.3441336693968E+19
n5 3.5267849194998E+24

Nth Root

y√n
2√n 284.92981591964
3√n 43.300402330976
4√n 16.879864215083
5√n 9.5916905505642

Divisors of 81185

1, 5, 13, 65, 1249, 6245, 16237, 81185

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 -81184
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 81185 can be divided by 8 positive divisors. The sum of these divisors (counting 81185) is 1, the average is 0.125.

Base conversion 81185

Base System Value
2 Binary 10011110100100001
3 Ternary 11010100212
4 Quaternary 103310201
5 Quinary 10044220
6 Senary 1423505
8 Octal 236441
10 Decimal 81185
12 Duodecimal 3ab95
16 Hexadecimal 13d21
20 Vigesimal a2j5
36 Base36 1qn5

Cryptographic Hash Functions

md5 cfee8d9c194fedbd1782a7d81e990743
sha1 36cba227b650a9f546f9f4a32be73addda04d3ae
sha256 6aee132cec721b89774b2f817c182f6282a1674eef0d20b5f255d05beaa39d9c
sha512 9326a7a2a6e29de1ffe34447b3197daa5fcea67103504bf49edb4bdb4afd1c0c960a0c1a2304d05e9ab80a43121b1db54d4f0021952b3c0964d3dc229220b8a2
ripemd-160 34387a8a4f1ed207191c508610f6e988313d1748

81185 as geometric shapes

Circle

Radius = n
Diameter 162370
Circumference 510100.39916337
Area 20706250453.039

Sphere

Radius = n
Volume 2.2413825907067E+15
Surface area 82825001812.157
Circumference 510100.39916337

Square

Length = n
Perimeter 324740
Area 6591004225
Diagonal 114812.92806126

Cube

Length = n
Surface area 39546025350
Volume 535090678006625
Space diagonal 140616.54481248

Equilateral Triangle

Length = n
Perimeter 243555
Area 2853988547.6503
Altitude 70308.27240624

Triangular Pyramid

Length = n
Surface area 2853988547.6503
Volume 63061041161365
Height 38270.97602042