21557065 is an odd 8-digits composite number following 21557064
and preceding 21557066 . In scientific notation, it is written as 2.1557065 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 17245648 positive integers (up to 21557065) that are relatively prime to 21557065.
21557065 has 4 divisors, whose sum is 25868484
The reverse of 21557065 is 56075512
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million five hundred fifty-seven thousand sixty-five
Scientific notation
2.1557065 × 10^7
Engineering notation
2.1557065 × 10^6
Prime Factorization
5 × 4311413
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21557065
Product of the distinct prime numbers
The prime factorization of 21557065 is 5 × 4311413.
Since it has a total of 2 prime factors.
3 , 5 , 81 , 12 , 899 , 322 , 889 , 3674 , 39939 , 76099 , 369389 , 667978 , 7651934 , 3574168 , 80857169 , 16042288 , 546327693 , 945518259 , 1429189376 , 4684999915
n×2
43114130
n×3
64671195
n×4
86228260
n×5
107785325
n÷2
10778532.5
n÷3
7185688.3333333
n÷3
5389266.25
n÷5
4311413
n2
464707051414225
n3
1.0017720113295E+22
n4
2.159526436341E+29
n5
4.6553051757422E+36
2 √n
4642.9586472421
3 √n
278.31068297479
4 √n
68.139259221407
5 √n
29.289902516099
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
-21557064
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 21557065 can be divided by 4 positive divisors.
The sum of these divisors (counting 21557065) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010001110111101001001
3
Ternary
1111120012201211
4
Quaternary
1102032331021
5
Quinary
21004311230
6
Senary
2050013121
8
Octal
122167511
10
Decimal
21557065
12
Duodecimal
72771a1
16
Hexadecimal
148ef49
20
Vigesimal
6eecd5
36
Base36
cu1jd
md5
0f61e51b161996116c1d42a074f45a6a
sha1
79850db3d8d932b16d54dc531ef3180fc09b591b
sha256
316559a510ac14660689d3420865b2213b610aec33f2a1ea44d34d100451458c
sha512
cfdcc9247497b42a612eddef0fb31c9fc1000169b24886ef07509d31ef151ed31d50b0dee5ba6d9d945f6b3523da2c8ab0e78ad1c4638638901d2e2c045c5608
ripemd-160
7ec8e1223483ad3fe698c173fdab135865ebf027
Diameter
43114130
Circumference
135447034.07392
Area
1.4599202587943E+15
Volume
4.1962127884861E+22
Surface area
5.8396810351772E+15
Circumference
135447034.07392
Perimeter
86228260
Area
464707051414225
Diagonal
30486293.687958
Surface area
2788242308485350
Volume
1.0017720113295E+22
Space diagonal
37337931.842065
Perimeter
64671195
Area
2.0122405592124E+14
Altitude
18668965.921032
Surface area
2.0122405592124E+14
Volume
1.1805996373566E+21
Height
10162097.895986