21554491 is an odd 8-digits composite number following 21554490
and preceding 21554492 . In scientific notation, it is written as 2.1554491 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 18221760 positive integers (up to 21554491) that are relatively prime to 21554491.
21554491 has 8 divisors, whose sum is 24971744
The reverse of 21554491 is 19445512
Previous prime number is 73
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million five hundred fifty-four thousand four hundred ninety-one
Scientific notation
2.1554491 × 10^7
Engineering notation
2.1554491 × 10^6
Prime Factorization
7 × 73 × 42181
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21554491
Product of the distinct prime numbers
The prime factorization of 21554491 is 7 × 73 × 42181.
Since it has a total of 3 prime factors.
9 , 1 , 19 , 35 , 358 , 732 , 8469 , 2937 , 90982 , 83564 , 432058 , 459493 , 9759905 , 4771948 , 71813669 , 11665062 , 599331010 , 557944903 , 1564331519 , 7980064830
n×2
43108982
n×3
64663473
n×4
86217964
n×5
107772455
n÷2
10777245.5
n÷3
7184830.3333333
n÷3
5388622.75
n÷5
4310898.2
n2
464596082269081
n3
1.0014132073904E+22
n4
2.1584951965978E+29
n5
4.652526528861E+36
2 √n
4642.6814450272
3 √n
278.2996053967
4 √n
68.13722510513
5 √n
29.289203016327
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
-21554490
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 21554491 can be divided by 8 positive divisors.
The sum of these divisors (counting 21554491) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001110010100111011
3
Ternary
1111120002012111
4
Quaternary
1102032110323
5
Quinary
21004220431
6
Senary
2045553151
8
Octal
122162473
10
Decimal
21554491
12
Duodecimal
72757b7
16
Hexadecimal
148e53b
20
Vigesimal
6ee64b
36
Base36
ctzjv
md5
2896383b3440127b50a9c792e255e6fd
sha1
80c6033bfc4234bebffe0cf65488eaa2bd298331
sha256
a95db012bdc1d2a9abc6164424650451fdc7112f2c2b3d2d638ff1cb365b23d5
sha512
90123d60bb3535fd49aabe2affb168cb2d7485446eb9996581c7b6a75cc001a5228db49bc3087a32a78390639d523f0aee096dddc891eab55e40aa7e676058dc
ripemd-160
01be5ea82abeeee84783539434cfc65c84806ab9
Diameter
43108982
Circumference
135430861.15493
Area
1.4595716389431E+15
Volume
4.1947098340607E+22
Surface area
5.8382865557726E+15
Circumference
135430861.15493
Perimeter
86217964
Area
464596082269081
Diagonal
30482653.502249
Surface area
2787576493614486
Volume
1.0014132073904E+22
Space diagonal
37333473.543286
Perimeter
64663473
Area
2.0117600487187E+14
Altitude
18666736.771643
Surface area
2.0117600487187E+14
Volume
1.1801767828592E+21
Height
10160884.50075