81321517 is an odd 8-digits prime number following 81321516
and preceding 81321518 . In scientific notation, it is written as 8.1321517 × 10^7.
The sum of its digits is 28. It has a total of 1 prime factors and 2 positive divisors.
There are 81321516 positive integers (up to 81321517) that are relatively prime to 81321517.
81321517 has 2 divisors, whose sum is 81321518
The reverse of 81321517 is 71512318
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 28 Digital Root 1
Name
eighty-one million three hundred twenty-one thousand five hundred seventeen
Scientific notation
8.1321517 × 10^7
Engineering notation
8.1321517 × 10^6
Prime Factorization
81321517
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81321517 Product of the distinct prime numbers
The prime factorization of 81321517 is 81321517.
Since it has a total of 1 prime factors.
10 , 1 , 62 , 14 , 844 , 552 , 6622 , 5366 , 55567 , 76368 , 107458 , 682971 , 9330588 , 1652543 , 49403664 , 46370109 , 386738528 , 819363617 , 2659974072 , 7913649972
n×2
162643034
n×3
243964551
n×4
325286068
n×5
406607585
n÷2
40660758.5
n÷3
27107172.333333
n÷3
20330379.25
n÷5
16264303.4
n2
6613189127181289
n3
5.3779457203029E+23
n4
4.3734270431869E+31
n5
3.5565372164078E+39
2 √n9017.8443654789
3 √n433.24659401285
4 √n94.96233129762
5 √n38.198041331352
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81321518 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40660759 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9017.8444209245 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999754063 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81321517 can be divided by 2 positive divisors.
The sum of these divisors (counting 81321517) is 81321518, the average is 40660759.
Base
System
Value
2
Binary
100110110001101111000101101
3
Ternary
12200000120011001
4
Quaternary
10312031320231
5
Quinary
131304242032
6
Senary
12023000301
8
Octal
466157055
10
Decimal
81321517
12
Duodecimal
23299091
16
Hexadecimal
4d8de2d
20
Vigesimal
15853fh
36
Base36
1cf031
md5
0cc52ae0f63dac39ede0a9634c6f72ee
sha1
2550f651015d528fbfa6f6eb4531e33caa75161b
sha256
6c5d17b066b00adbeeea5cbe90c698602b4a3ecd743f292f3cd38a92c532251c
sha512
2e32df55e1887213a64d233b7c15934c84bb0fbad270a61ba584658d954bbfe0868b1486867dd3d4f639c1d0d3d83aff2758d06be26b20ecfbaaecdabe68abf1
ripemd-160
351b4b06c01eb034751f0c706f16ef99795b5a0d
Diameter
162643034
Circumference
510958160.77195
Area
2.0775946378753E+16
Volume
2.2527086355078E+24
Surface area
8.3103785515011E+16
Circumference
510958160.77195
Perimeter
325286068
Area
6613189127181289
Diagonal
115005992.25415
Surface area
39679134763087734
Volume
5.3779457203029E+23
Space diagonal
140852999.19258
Perimeter
243964551
Area
2.863594892085E+15
Altitude
70426499.596288
Surface area
2.863594892085E+15
Volume
6.3379698127989E+22
Height
38335330.751385