21002557 is an odd 8-digits composite number following 21002556
and preceding 21002558 . In scientific notation, it is written as 2.1002557 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 20689020 positive integers (up to 21002557) that are relatively prime to 21002557.
21002557 has 4 divisors, whose sum is 21316096
The reverse of 21002557 is 75520012
Previous prime number is 67
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty-one million two thousand five hundred fifty-seven
Scientific notation
2.1002557 × 10^7
Engineering notation
2.1002557 × 10^6
Prime Factorization
67 × 313471
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21002557
Product of the distinct prime numbers
The prime factorization of 21002557 is 67 × 313471.
Since it has a total of 2 prime factors.
6 , 1 , 99 , 1 , 98 , 652 , 5627 , 6882 , 67579 , 42734 , 7296 , 710026 , 8832132 , 1565228 , 28160461 , 1125081 , 274929371 , 168921162 , 7569067941 , 8677454498
n×2
42005114
n×3
63007671
n×4
84010228
n×5
105012785
n÷2
10501278.5
n÷3
7000852.3333333
n÷3
5250639.25
n÷5
4200511.4
n2
441107400538249
n3
9.2643833229264E+21
n4
1.9457573880961E+29
n5
4.086588045166E+36
2 √n
4582.8546780364
3 √n
275.90361491242
4 √n
67.696784842682
5 √n
29.137644104937
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
-21002556
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 21002557 can be divided by 4 positive divisors.
The sum of these divisors (counting 21002557) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000111100100111101
3
Ternary
1110112001002111
4
Quaternary
1100013210331
5
Quinary
20334040212
6
Senary
2030054021
8
Octal
120074475
10
Decimal
21002557
12
Duodecimal
704a311
16
Hexadecimal
140793d
20
Vigesimal
6b567h
36
Base36
ci5od
md5
6adc1043bf4ecd5711766aec7f740ba5
sha1
88e17c18c1e45063cf5c139d890d111d32597165
sha256
109977bd5db9631d2f962beb0fcd4312f3709b17c22cc55ea285897cba023177
sha512
ddf508d9733ba6c8f1e67323265a68f54fca8aeeb0de4455adb59b5d6dee5ac90d0004488e176fbecff52aaf0ffecd3f361b7161a9495dcdb76090a472209d45
ripemd-160
527457b403faf771c7adc930dacb7a6402256cc6
Diameter
42005114
Circumference
131962957.5556
Area
1.3857797689751E+15
Volume
3.8806558116461E+22
Surface area
5.5431190759002E+15
Circumference
131962957.5556
Perimeter
84010228
Area
441107400538249
Diagonal
29702100.953914
Surface area
2646644403229494
Volume
9.2643833229264E+21
Space diagonal
36377495.812861
Perimeter
63007671
Area
1.9100510733172E+14
Altitude
18188747.906431
Surface area
1.9100510733172E+14
Volume
1.0918180451921E+21
Height
9900700.3179713