81571937 is an odd 8-digits prime number following 81571936
and preceding 81571938 . In scientific notation, it is written as 8.1571937 × 10^7.
The sum of its digits is 41. It has a total of 1 prime factors and 2 positive divisors.
There are 81571936 positive integers (up to 81571937) that are relatively prime to 81571937.
81571937 has 2 divisors, whose sum is 81571938
The reverse of 81571937 is 73917518
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
eighty-one million five hundred seventy-one thousand nine hundred thirty-seven
Scientific notation
8.1571937 × 10^7
Engineering notation
8.1571937 × 10^6
Prime Factorization
81571937
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81571937
Product of the distinct prime numbers
The prime factorization of 81571937 is 81571937.
Since it has a total of 1 prime factors.
10 , 6 , 33 , 99 , 917 , 732 , 9929 , 3868 , 30207 , 23010 , 741636 , 788579 , 6350139 , 7555783 , 78351138 , 84326469 , 426292143 , 321103356 , 4600056913 , 8084506174
n×2
163143874
n×3
244715811
n×4
326287748
n×5
407859685
n÷2
40785968.5
n÷3
27190645.666667
n÷3
20392984.25
n÷5
16314387.4
n2
6653980905931969
n3
5.4277811125789E+23
n4
4.4275461896507E+31
n5
3.6116351884678E+39
2 √n
9031.718385778
3 √n
433.69084887421
4 √n
95.035353346941
5 √n
38.22153767817
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81571938
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40785969
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9031.7184411384
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999754818
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81571937 can be divided by 2 positive divisors.
The sum of these divisors (counting 81571937) is 81571938, the average is 40785969.
Base
System
Value
2
Binary
100110111001011000001100001
3
Ternary
12200111021122212
4
Quaternary
10313023001201
5
Quinary
131340300222
6
Senary
12032211505
8
Octal
467130141
10
Decimal
81571937
12
Duodecimal
23399b95
16
Hexadecimal
4dcb061
20
Vigesimal
159g9gh
36
Base36
1ckdb5
md5
c5bf0ab97890b1b2a7b2bcd06d1d3d67
sha1
a17cdc5da92ea4f2953f8488b0d0022707b9c045
sha256
58e5238cee1c2316fc2484367c740ee38226eeba3bfac4933846669586fe279f
sha512
fcc3d7b4e7c5a6f5a1278fe0d0f8851a10365d3677d28f4f0a5a19ca1a0be8ce4b9869cd02b4a5d49f8aa5b71cc49c77525d902c46c6cdb675d28fe3b4cce036
ripemd-160
c040ae5e4e49401b02fe11feebf41ebfec68a077
Diameter
163143874
Circumference
512531596.03658
Area
2.0904097531203E+16
Volume
2.2735836358095E+24
Surface area
8.3616390124811E+16
Circumference
512531596.03658
Perimeter
326287748
Area
6653980905931969
Diagonal
115360139.61444
Surface area
39923885435591814
Volume
5.4277811125789E+23
Space diagonal
141286739.35581
Perimeter
244715811
Area
2.8812582504168E+15
Altitude
70643369.677904
Surface area
2.8812582504168E+15
Volume
6.3967013858346E+22
Height
38453379.871481