21551807 is an odd 8-digits composite number following 21551806
and preceding 21551808 . In scientific notation, it is written as 2.1551807 × 10^7.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 21194784 positive integers (up to 21551807) that are relatively prime to 21551807.
21551807 has 8 divisors, whose sum is 21912000
The reverse of 21551807 is 70815512
Previous prime number is 149
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million five hundred fifty-one thousand eight hundred seven
Scientific notation
2.1551807 × 10^7
Engineering notation
2.1551807 × 10^6
Prime Factorization
109 × 149 × 1327
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21551807
Product of the distinct prime numbers
The prime factorization of 21551807 is 109 × 149 × 1327.
Since it has a total of 3 prime factors.
2 , 10 , 77 , 23 , 800 , 353 , 9696 , 8959 , 35105 , 35814 , 917322 , 332877 , 1616709 , 4375891 , 79906025 , 5751304 , 95877205 , 876477855 , 2322609328 , 2310823188
n×2
43103614
n×3
64655421
n×4
86207228
n×5
107759035
n÷2
10775903.5
n÷3
7183935.6666667
n÷3
5387951.75
n÷5
4310361.4
n2
464480384965249
n3
1.0010391612057E+22
n4
2.1574202801747E+29
n5
4.649630549621E+36
2 √n
4642.3923789357
3 √n
278.28805347856
4 √n
68.135103866771
5 √n
29.288473552229
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
-21551806
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 21551807 can be divided by 8 positive divisors.
The sum of these divisors (counting 21551807) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001101101010111111
3
Ternary
1111112221112002
4
Quaternary
1102031222333
5
Quinary
21004124212
6
Senary
2045532515
8
Octal
122155277
10
Decimal
21551807
12
Duodecimal
727413b
16
Hexadecimal
148dabf
20
Vigesimal
6edja7
36
Base36
ctxhb
md5
82b42705695ed2c534846fcd8663abc3
sha1
b5a23c28800d0d514965ececc558ee083fc5f1c4
sha256
f15bb8eb9b988346783bd426d4a14efa3399ee9c8a6aec9a07039683e9541afd
sha512
49988c3b323b8d23c207d6abb8dbe7fc9463515e1883befdac73401d7712d2f8e6328d8ac09f5391554fded35a9caf0c9f97581a141504ed4921ef14a08ee46b
ripemd-160
1be862dbe045beec0400c484ec17029844686b75
Diameter
43103614
Circumference
135413997.08557
Area
1.4592081651434E+15
Volume
4.1931430330659E+22
Surface area
5.8368326605735E+15
Circumference
135413997.08557
Perimeter
86207228
Area
464480384965249
Diagonal
30478857.753047
Surface area
2786882309791494
Volume
1.0010391612057E+22
Space diagonal
37328824.718919
Perimeter
64655421
Area
2.0112590646974E+14
Altitude
18664412.359459
Surface area
2.0112590646974E+14
Volume
1.179735965203E+21
Height
10159619.251016