21553561 is an odd 8-digits composite number following 21553560
and preceding 21553562 . In scientific notation, it is written as 2.1553561 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 21388900 positive integers (up to 21553561) that are relatively prime to 21553561.
21553561 has 4 divisors, whose sum is 21718224
The reverse of 21553561 is 16535512
Previous prime number is 131
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million five hundred fifty-three thousand five hundred sixty-one
Scientific notation
2.1553561 × 10^7
Engineering notation
2.1553561 × 10^6
Prime Factorization
131 × 164531
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21553561
Product of the distinct prime numbers
The prime factorization of 21553561 is 131 × 164531.
Since it has a total of 2 prime factors.
2 , 1 , 69 , 43 , 597 , 373 , 8254 , 3441 , 2738 , 99681 , 657257 , 311592 , 360051 , 5710683 , 79602256 , 86013622 , 463389028 , 457650104 , 1148419609 , 101142370
n×2
43107122
n×3
64660683
n×4
86214244
n×5
107767805
n÷2
10776780.5
n÷3
7184520.3333333
n÷3
5388390.25
n÷5
4310712.2
n2
464555991780721
n3
1.0012835906761E+22
n4
2.1581226949937E+29
n5
4.6515229152031E+36
2 √n
4642.5812863105
3 √n
278.29560279147
4 √n
68.136490123211
5 √n
29.288950266875
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
-21553560
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 21553561 can be divided by 4 positive divisors.
The sum of these divisors (counting 21553561) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010001110000110011001
3
Ternary
1111120000221001
4
Quaternary
1102032012121
5
Quinary
21004203221
6
Senary
2045545001
8
Octal
122160631
10
Decimal
21553561
12
Duodecimal
7275161
16
Hexadecimal
148e199
20
Vigesimal
6ee3i1
36
Base36
ctyu1
md5
380a23a6ea47e25d007150fa2102c0c3
sha1
c83585175d00c0bc419a94bb75351f66f0eb0339
sha256
b77aaac960ab604baa6daeef92333886e1e2583f3f521ec495bbc07c93258343
sha512
a174e99d5b8a274d30fde599da97211a866495abbe4570a4be6a31c31792ebbdedcab89261373a2dfcc33dda3f83d2815791e40283f1ed41ba8176d73f113c99
ripemd-160
8c744a9463f898102c00019c3e19424f7bc865f4
Diameter
43107122
Circumference
135425017.7926
Area
1.4594456909594E+15
Volume
4.1941668968375E+22
Surface area
5.8377827638377E+15
Circumference
135425017.7926
Perimeter
86214244
Area
464555991780721
Diagonal
30481338.283636
Surface area
2787335950684326
Volume
1.0012835906761E+22
Space diagonal
37331862.736035
Perimeter
64660683
Area
2.0115864518119E+14
Altitude
18665931.368018
Surface area
2.0115864518119E+14
Volume
1.1800240280965E+21
Height
10160446.094545