81497725 is an odd 8-digits composite number following 81497724
and preceding 81497726 . In scientific notation, it is written as 8.1497725 × 10^7.
The sum of its digits is 43. It has a total of 3 prime factors and 6 positive divisors.
There are 65198160 positive integers (up to 81497725) that are relatively prime to 81497725.
81497725 has 6 divisors, whose sum is 101057210
The reverse of 81497725 is 52779418
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
eighty-one million four hundred ninety-seven thousand seven hundred twenty-five
Scientific notation
8.1497725 × 10^7
Engineering notation
8.1497725 × 10^6
Prime Factorization
5 × 5 × 3259909
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
16299545
Product of the distinct prime numbers
The prime factorization of 81497725 is 5 × 5 × 3259909.
Since it has a total of 3 prime factors.
7 , 4 , 97 , 47 , 892 , 429 , 7970 , 9626 , 63723 , 14531 , 589786 , 845304 , 8994810 , 4767373 , 9115499 , 46691297 , 671339955 , 518355097 , 9888046909 , 6157886128
n×2
162995450
n×3
244493175
n×4
325990900
n×5
407488625
n÷2
40748862.5
n÷3
27165908.333333
n÷3
20374431.25
n÷5
16299545
n2
6641879180175625
n3
5.4129804290918E+23
n4
4.411455904405E+31
n5
3.5952362014683E+39
2 √n
9027.6090411581
3 √n
433.55928879865
4 √n
95.01373080328
5 √n
38.214580556272
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81497724
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81497725 can be divided by 6 positive divisors.
The sum of these divisors (counting 81497725) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
100110110111000111001111101
3
Ternary
12200100111212021
4
Quaternary
10312320321331
5
Quinary
131330411400
6
Senary
12030440141
8
Octal
466707175
10
Decimal
81497725
12
Duodecimal
23363051
16
Hexadecimal
4db8e7d
20
Vigesimal
1597465
36
Base36
1cis1p
md5
ba736b5174bfd1f7684c499c4d04e49e
sha1
cb447bf9505da389b3dbdcb8f2e46acfc03f44bb
sha256
3e8298758f1e9eb3445f860772be8a805428b941a4622afed70870d0d1394523
sha512
4524871ee29547e7de8cd5d9b98b6ca5565bbc2a8bb18f7c399740603b85e7ce9cdb3bb05ab77db1d239fc53a90f5cf4af12753a58e74ba436428eb34e55b288
ripemd-160
c178b68e77febe781dda640efad94178090162f2
Diameter
162995450
Circumference
512065308.28856
Area
2.0866078838471E+16
Volume
2.267383940008E+24
Surface area
8.3464315353883E+16
Circumference
512065308.28856
Perimeter
325990900
Area
6641879180175625
Diagonal
115255187.99755
Surface area
39851275081053750
Volume
5.4129804290918E+23
Space diagonal
141158200.40128
Perimeter
244493175
Area
2.8760180494495E+15
Altitude
70579100.200638
Surface area
2.8760180494495E+15
Volume
6.3792586130681E+22
Height
38418395.999184