21575 is an odd 5-digits composite number following 21574
and preceding 21576 . In scientific notation, it is written as 2.1575 × 10^4.
The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors.
There are 17240 positive integers (up to 21575) that are relatively prime to 21575.
21575 has 4 divisors, whose sum is 22464
The reverse of 21575 is 57512
Previous prime number is 25
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 20
Digital Root 2
Name
twenty-one thousand five hundred seventy-five
Scientific notation
2.1575 × 10^4
Engineering notation
2.1575 × 10^3
Prime Factorization
25 × 863
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21575
Product of the distinct prime numbers
The prime factorization of 21575 is 25 × 863.
Since it has a total of 2 prime factors.
7 , 1 , 40 , 23 , 338 , 138 , 1150 , 4103 , 25983 , 80168 , 299640 , 566746 , 2569889 , 5905493 , 4325810 , 54509610 , 201765832 , 177634778 , 6288364721 , 4015945648
n×2
43150
n×3
64725
n×4
86300
n×5
107875
n÷2
10787.5
n÷3
7191.6666666667
n÷3
5393.75
n÷5
4315
n2
465480625
n3
10042744484375
n4
216672212250390625
n5
4.6747029793022E+21
2 √n
146.88430821568
3 √n
27.83878443519
4 √n
12.119583665113
5 √n
7.358514684404
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
-21574
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 21575 can be divided by 4 positive divisors.
The sum of these divisors (counting 21575) is 1, the average is 0.25.
Base
System
Value
2
Binary
101010001000111
3
Ternary
1002121002
4
Quaternary
11101013
5
Quinary
1142300
6
Senary
243515
8
Octal
52107
10
Decimal
21575
12
Duodecimal
1059b
16
Hexadecimal
5447
20
Vigesimal
2dif
36
Base36
gnb
md5
7effe368dace6405ddee825c0707c434
sha1
405d0cbbb0d05ff5b5e5b5b2e5494d9817264890
sha256
74c1eb38c0970a3377e2b720dc63b6470b7dbebc539763d0fc7af6830fba8a4b
sha512
a9d8d50358f88613b617a3a8e32dd91cdb7394f3dcac592501e936b9999619e9c2a1b96c94338462fe1d9c0fd0ce7ed77e773782aa308b5ec5bf45f362da1366
ripemd-160
88b78bd76b53f49d476d8d6a0f69d6cf0fd82c4b
Diameter
43150
Circumference
135559.7230024
Area
1462350511.8884
Volume
42066949725323
Surface area
5849402047.5535
Circumference
135559.7230024
Perimeter
86300
Area
465480625
Diagonal
30511.6576082
Surface area
2792883750
Volume
10042744484375
Space diagonal
37368.996173299
Perimeter
64725
Area
201559023.10973
Altitude
18684.498086649
Surface area
201559023.10973
Volume
1183548787770.9
Height
10170.552536067