81485655 (number)

81485655 is an odd 8-digits composite number following 81485654 and preceding 81485656. In scientific notation, it is written as 8.1485655 × 10^7. The sum of its digits is 42. It has a total of 5 prime factors and 32 positive divisors. There are 41241600 positive integers (up to 81485655) that are relatively prime to 81485655.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-five thousand six hundred fifty-five

Notation

Scientific notation 8.1485655 × 10^7
Engineering notation 8.1485655 × 10^6

Prime Factorization of 81485655

Prime Factorization 5 × 3 × 37 × 41 × 3581

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81485655
Product of the distinct prime numbers

The prime factorization of 81485655 is 5 × 3 × 37 × 41 × 3581. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 6, 70, 27, 701, 760, 8691, 6415, 3124, 86608, 387245, 290338, 2785778, 745753, 92056057, 31977180, 348562609, 3230956, 3038423312, 3112437109

Basic calculations (n = 81485655)

Multiplication

n×y
n×2 162971310
n×3 244456965
n×4 325942620
n×5 407428275

Division

n÷y
n÷2 40742827.5
n÷3 27161885
n÷3 20371413.75
n÷5 16297131

Exponentiation

ny
n2 6639911970779025
n3 5.4105757608127E+23
n4 4.4088430979695E+31
n5 3.5925746763027E+39

Nth Root

y√n
2√n 9026.9405116019
3√n 433.53788403354
4√n 95.010212670017
5√n 38.213448555803

Divisors of 81485655

1, 3, 5, 15, 37, 41, 111, 123, 185, 205, 555, 615, 1517, 3581, 4551, 7585, 10743, 17905, 22755, 53715, 132497, 146821, 397491, 440463, 662485, 734105, 1987455, 2202315, 5432377, 16297131, 27161885, 81485655

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81485654
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81485655 can be divided by 32 positive divisors. The sum of these divisors (counting 81485655) is 1, the average is 0.03125.

Base conversion 81485655

Base System Value
2 Binary 100110110110101111101010111
3 Ternary 12200022220022020
4 Quaternary 10312311331113
5 Quinary 131330020110
6 Senary 12030304223
8 Octal 466657527
10 Decimal 81485655
12 Duodecimal 23358073
16 Hexadecimal 4db5f57
20 Vigesimal 1595e2f
36 Base36 1ciiqf

Cryptographic Hash Functions

md5 892b576eabe923cd506398b569625afc
sha1 11b53529d4d339898dff65c3feeee69e9c9067dc
sha256 28588efbec8e9bf277a2861436380fd6a3287cd13526c0f86efcd1055d2e9cb2
sha512 2a84985f4c1c969b92fec7d3a1e67824917430a6db4b9baca62ab5fa1c5e64c1e8db9f47e07c093bde6ea1354c966ca97dad050f780ef8402f3413fa0cdae986
ripemd-160 c6fbeff4301bee6becb4d38f60a08537ab352b48

81485655 as geometric shapes

Circle

Radius = n
Diameter 162971310
Circumference 511989470.2419
Area 2.0859898667882E+16

Sphere

Radius = n
Volume 2.2663766749147E+24
Surface area 8.3439594671529E+16
Circumference 511989470.2419

Square

Length = n
Perimeter 325942620
Area 6639911970779025
Diagonal 115238118.43986

Cube

Length = n
Surface area 39839471824674150
Volume 5.4105757608127E+23
Space diagonal 141137294.54803

Equilateral Triangle

Length = n
Perimeter 244456965
Area 2.8751662227935E+15
Altitude 70568647.274014

Triangular Pyramid

Length = n
Surface area 2.8751662227935E+15
Volume 6.3764246843237E+22
Height 38412706.146618