21521617 is an odd 8-digits composite number following 21521616
and preceding 21521618 . In scientific notation, it is written as 2.1521617 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 19866096 positive integers (up to 21521617) that are relatively prime to 21521617.
21521617 has 4 divisors, whose sum is 23177140
The reverse of 21521617 is 71612512
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million five hundred twenty-one thousand six hundred seventeen
Scientific notation
2.1521617 × 10^7
Engineering notation
2.1521617 × 10^6
Prime Factorization
13 × 1655509
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21521617
Product of the distinct prime numbers
The prime factorization of 21521617 is 13 × 1655509.
Since it has a total of 2 prime factors.
1 , 8 , 38 , 52 , 826 , 307 , 7850 , 392 , 92520 , 40916 , 683654 , 873959 , 4109402 , 2123325 , 94493738 , 2250468 , 387535248 , 434746109 , 1679153859 , 4398244450
n×2
43043234
n×3
64564851
n×4
86086468
n×5
107608085
n÷2
10760808.5
n÷3
7173872.3333333
n÷3
5380404.25
n÷5
4304323.4
n2
463179998294689
n3
9.9683825253589E+21
n4
2.1453571082027E+29
n5
4.6171554010966E+36
2 √n
4639.139683174
3 √n
278.1580498031
4 √n
68.111230228018
5 √n
29.280263429683
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
-21521616
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 21521617 can be divided by 4 positive divisors.
The sum of these divisors (counting 21521617) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010000110010011010001
3
Ternary
1111111102002221
4
Quaternary
1102012103101
5
Quinary
21002142432
6
Senary
2045141041
8
Octal
122062321
10
Decimal
21521617
12
Duodecimal
725a781
16
Hexadecimal
14864d1
20
Vigesimal
6ea40h
36
Base36
cta6p
md5
8ad0f9f23c7ce8dca4eac8d79591d3ce
sha1
d8b31ecd1a1fa55bfb15dc89c77e2ad32ece0ddd
sha256
ef247e599c08b5aefb834dc7c0ecd314f1455705612e65eb6df386cf9292bec5
sha512
e15f288a5d46e985087d5c73a6996d585b35067bcbc813ed7f4f9f3bfb95c3dcecfeef07cc7c9dc947894e5ad4c5d2da4c09819cfdae4e0147e2c0fcc15e0b30
ripemd-160
28793ae641524ebd2c8872bdc33188ad992a50ae
Diameter
43043234
Circumference
135224307.72115
Area
1.4551228799323E+15
Volume
4.1755463079787E+22
Surface area
5.8204915197293E+15
Circumference
135224307.72115
Perimeter
86086468
Area
463179998294689
Diagonal
30436162.645599
Surface area
2779079989768134
Volume
9.9683825253589E+21
Space diagonal
37276534.105038
Perimeter
64564851
Area
2.0056282252402E+14
Altitude
18638267.052519
Surface area
2.0056282252402E+14
Volume
1.1747851468571E+21
Height
10145387.548533