21231251 is an odd 8-digits composite number following 21231250
and preceding 21231252 . In scientific notation, it is written as 2.1231251 × 10^7.
The sum of its digits is 17. It has a total of 2 prime factors and 4 positive divisors.
There are 21210000 positive integers (up to 21231251) that are relatively prime to 21231251.
21231251 has 4 divisors, whose sum is 21252504
The reverse of 21231251 is 15213212
Previous prime number is 1051
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 17
Digital Root 8
Name
twenty-one million two hundred thirty-one thousand two hundred fifty-one
Scientific notation
2.1231251 × 10^7
Engineering notation
2.1231251 × 10^6
Prime Factorization
1051 × 20201
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21231251
Product of the distinct prime numbers
The prime factorization of 21231251 is 1051 × 20201.
Since it has a total of 2 prime factors.
1 , 2 , 21 , 5 , 294 , 473 , 8004 , 3817 , 34309 , 51661 , 131116 , 633074 , 7580645 , 8787695 , 3244913 , 25740380 , 865703725 , 386457519 , 5119303951 , 4423250899
n×2
42462502
n×3
63693753
n×4
84925004
n×5
106156255
n÷2
10615625.5
n÷3
7077083.6666667
n÷3
5307812.75
n÷5
4246250.2
n2
450766019025001
n3
9.5703264921906E+21
n4
2.0319000390765E+29
n5
4.3139779736542E+36
2 √n
4607.7381653041
3 √n
276.9014276503
4 √n
67.880322371834
5 √n
29.200824687508
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21231250
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21231251 can be divided by 4 positive divisors.
The sum of these divisors (counting 21231251) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000111111011010010011
3
Ternary
1110221122210122
4
Quaternary
1100333122103
5
Quinary
20413400001
6
Senary
2035020455
8
Octal
120773223
10
Decimal
21231251
12
Duodecimal
713a72b
16
Hexadecimal
143f693
20
Vigesimal
6cdi2b
36
Base36
cn24z
md5
7d6d1e1ba0544cc4f5c7f76f4baf6571
sha1
b59be834ff56aaa001d0a3027f51062f2672c2c8
sha256
d1bf60f87fad630bd5fa776327550ac71201325341116790b207ab3a76a8a979
sha512
4b463f52e1854d875656d26e065ba0baf400341287fc22db79b662e2f70376a5cfd7980281f2a533a9636b4d9b50a7fbb6d6b3472a053ea93176ec69ec0f2b55
ripemd-160
d81568a10f2c9320fde57efbd511151a2b725a30
Diameter
42462502
Circumference
133399884.33624
Area
1.4161232138569E+15
Volume
4.0088089867096E+22
Surface area
5.6644928554274E+15
Circumference
133399884.33624
Perimeter
84925004
Area
450766019025001
Diagonal
30025523.110347
Surface area
2704596114150006
Volume
9.5703264921906E+21
Space diagonal
36773605.440248
Perimeter
63693753
Area
1.9518741181922E+14
Altitude
18386802.720124
Surface area
1.9518741181922E+14
Volume
1.1278737934662E+21
Height
10008507.703449