81597979 is an odd 8-digits prime number following 81597978
and preceding 81597980 . In scientific notation, it is written as 8.1597979 × 10^7.
The sum of its digits is 55. It has a total of 1 prime factors and 2 positive divisors.
There are 81597978 positive integers (up to 81597979) that are relatively prime to 81597979.
81597979 has 2 divisors, whose sum is 81597980
The reverse of 81597979 is 97979518
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 55
Digital Root 1
Name
eighty-one million five hundred ninety-seven thousand nine hundred seventy-nine
Scientific notation
8.1597979 × 10^7
Engineering notation
8.1597979 × 10^6
Prime Factorization
81597979
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81597979
Product of the distinct prime numbers
The prime factorization of 81597979 is 81597979.
Since it has a total of 1 prime factors.
7 , 1 , 78 , 2 , 631 , 680 , 3061 , 4396 , 47175 , 18549 , 96616 , 724451 , 4253187 , 2526182 , 58742110 , 42438248 , 855230006 , 619579789 , 8181163281 , 1957075107
n×2
163195958
n×3
244793937
n×4
326391916
n×5
407989895
n÷2
40798989.5
n÷3
27199326.333333
n÷3
20399494.75
n÷5
16319595.8
n2
6658230176884441
n3
5.4329812615058E+23
n4
4.4332029088375E+31
n5
3.6174039785806E+39
2 √n
9033.1599675861
3 √n
433.73699618017
4 √n
95.042937494514
5 √n
38.223977826673
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81597980
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40798990
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9033.1600229377
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999754896
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81597979 can be divided by 2 positive divisors.
The sum of these divisors (counting 81597979) is 81597980, the average is 40798990.
Base
System
Value
2
Binary
100110111010001011000011011
3
Ternary
12200112121101101
4
Quaternary
10313101120123
5
Quinary
131342113404
6
Senary
12032532231
8
Octal
467213033
10
Decimal
81597979
12
Duodecimal
233b1077
16
Hexadecimal
4dd161b
20
Vigesimal
159jeij
36
Base36
1ckxej
md5
ad1eebea498cdd765acac4856125ef0c
sha1
67a6af0403242f4733ba6310f9c23e1761b8550b
sha256
5c343dc01313f4efac551cf374acd86deb71e89401d4007ae35b89e425887ac3
sha512
2b9f47c1cbe8d802345cdf4f8eb3977e2ce6c9e358d94383c9133f19de321c24f90c2b0970004ced4e3fb1d30121a225502a69cf3606b899e4540f2b12aa0a6f
ripemd-160
dd88770fb3e2f39efbfaa8efb8d8fee77057e642
Diameter
163195958
Circumference
512695222.74835
Area
2.091744700961E+16
Volume
2.2757618690984E+24
Surface area
8.366978803844E+16
Circumference
512695222.74835
Perimeter
326391916
Area
6658230176884441
Diagonal
115396968.56404
Surface area
39949381061306646
Volume
5.4329812615058E+23
Space diagonal
141331845.42294
Perimeter
244793937
Area
2.883098238713E+15
Altitude
70665922.711469
Surface area
2.883098238713E+15
Volume
6.402829820117E+22
Height
38465656.188012