21551187 is an odd 8-digits composite number following 21551186
and preceding 21551188 . In scientific notation, it is written as 2.1551187 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 11666592 positive integers (up to 21551187) that are relatively prime to 21551187.
21551187 has 8 divisors, whose sum is 23766160
The reverse of 21551187 is 78115512
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million five hundred fifty-one thousand one hundred eighty-seven
Scientific notation
2.1551187 × 10^7
Engineering notation
2.1551187 × 10^6
Prime Factorization
21 × 19 × 54013
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21551187
Product of the distinct prime numbers
The prime factorization of 21551187 is 21 × 19 × 54013.
Since it has a total of 3 prime factors.
4 , 9 , 32 , 82 , 590 , 930 , 426 , 4657 , 37129 , 31602 , 544759 , 745776 , 8307927 , 93884 , 32129598 , 66049710 , 30264779 , 927199733 , 1208693095 , 3941356376
n×2
43102374
n×3
64653561
n×4
86204748
n×5
107755935
n÷2
10775593.5
n÷3
7183729
n÷3
5387796.75
n÷5
4310237.4
n2
464453661108969
n3
1.0009527703394E+22
n4
2.1571720331753E+29
n5
4.648961787813E+36
2 √n
4642.3256025402
3 √n
278.28538486632
4 √n
68.134613835702
5 √n
29.288305036776
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21551186
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21551187 can be divided by 8 positive divisors.
The sum of these divisors (counting 21551187) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001101100001010011
3
Ternary
1111112220200010
4
Quaternary
1102031201103
5
Quinary
21004114222
6
Senary
2045530003
8
Octal
122154123
10
Decimal
21551187
12
Duodecimal
7273903
16
Hexadecimal
148d853
20
Vigesimal
6edhj7
36
Base36
ctx03
md5
f042be632e3ecbb57b1048e8cb864421
sha1
7fa6075faa88be2f1b20412039c46726c0a08932
sha256
85873691ee7a7e89b513ca73c28c1800482569e971c243f12dd19c34f8d98ab9
sha512
2fb733cf3bf57a0d4bda4b0153b0955e12127c261c5d82e9ebbbf0987217131ecca4ad62fa3f792255a1b92c51d0e37b174667a5534605899df37567bda84215
ripemd-160
86da2566447e3b558d3aca187baa1346136509dd
Diameter
43102374
Circumference
135410101.51068
Area
1.4591242096728E+15
Volume
4.1927811598515E+22
Surface area
5.8364968386913E+15
Circumference
135410101.51068
Perimeter
86204748
Area
464453661108969
Diagonal
30477980.940639
Surface area
2786721966653814
Volume
1.0009527703394E+22
Space diagonal
37327750.847418
Perimeter
64653561
Area
2.0111433470053E+14
Altitude
18663875.423709
Surface area
2.0111433470053E+14
Volume
1.1796341525908E+21
Height
10159326.980213