12561921 is an odd 8-digits composite number following 12561920
and preceding 12561922 . In scientific notation, it is written as 1.2561921 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 8322264 positive integers (up to 12561921) that are relatively prime to 12561921.
12561921 has 8 divisors, whose sum is 14044960
The reverse of 12561921 is 12916521
Previous prime number is 163
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twelve million five hundred sixty-one thousand nine hundred twenty-one
Scientific notation
1.2561921 × 10^7
Engineering notation
1.2561921 × 10^6
Prime Factorization
9 × 163 × 8563
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
12561921
Product of the distinct prime numbers
The prime factorization of 12561921 is 9 × 163 × 8563.
Since it has a total of 3 prime factors.
8 , 3 , 67 , 15 , 225 , 657 , 7535 , 8444 , 4967 , 45969 , 746069 , 655233 , 8372288 , 6179524 , 98474930 , 47660986 , 825206170 , 983026485 , 6965683386 , 1448991756
n×2
25123842
n×3
37685763
n×4
50247684
n×5
62809605
n÷2
6280960.5
n÷3
4187307
n÷3
3140480.25
n÷5
2512384.2
n2
157801859210241
n3
1.9822944890522E+21
n4
2.4901426770209E+28
n5
3.1280975587465E+35
2 √n
3544.280039726
3 √n
232.46202640314
4 √n
59.533856247735
5 √n
26.291248591491
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-12561920
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 12561921 can be divided by 8 positive divisors.
The sum of these divisors (counting 12561921) is 1, the average is 0.125.
Base
System
Value
2
Binary
101111111010111000000001
3
Ternary
212122012201100
4
Quaternary
233322320001
5
Quinary
11203440141
6
Senary
1125125013
8
Octal
57727001
10
Decimal
12561921
12
Duodecimal
4259769
16
Hexadecimal
bfae01
20
Vigesimal
3ia4g1
36
Base36
7h8u9
md5
58f57f9b66ee3b6b30807a4403a9eed8
sha1
a5c3ebf4a842127da9de03c1c445d5fad3a42e41
sha256
85351ff79f261bc372e547e2a5b19fe7c70a457aef48bbaaa1091f278b7702c1
sha512
54e74dea6c04184740b10237cea8fdf4967efeaabe9fdffb49d7578bc9a46ca4d13db983ebf3589c121a092f52777d5811cbb64f556494a39d22ad9a9deb5dff
ripemd-160
a96a919d6de89da5b6e0db2f125e42b8b0b4ca9e
Diameter
25123842
Circumference
78928877.457151
Area
4.957491616177E+14
Volume
8.3034157387438E+21
Surface area
1.9829966464708E+15
Circumference
78928877.457151
Perimeter
50247684
Area
157801859210241
Diagonal
17765239.047659
Surface area
946811155261446
Volume
1.9822944890522E+21
Space diagonal
21757885.412666
Perimeter
37685763
Area
68330209420242
Altitude
10878942.706333
Surface area
68330209420242
Volume
2.3361564591959E+20
Height
5921746.3492198