21550145 is an odd 8-digits composite number following 21550144
and preceding 21550146 . In scientific notation, it is written as 2.1550145 × 10^7.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 17210736 positive integers (up to 21550145) that are relatively prime to 21550145.
21550145 has 8 divisors, whose sum is 25904256
The reverse of 21550145 is 54105512
Previous prime number is 643
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-one million five hundred fifty thousand one hundred forty-five
Scientific notation
2.1550145 × 10^7
Engineering notation
2.1550145 × 10^6
Prime Factorization
5 × 643 × 6703
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21550145
Product of the distinct prime numbers
The prime factorization of 21550145 is 5 × 643 × 6703.
Since it has a total of 3 prime factors.
8 , 9 , 59 , 82 , 563 , 517 , 9572 , 2762 , 77848 , 29423 , 261162 , 927483 , 6443833 , 7382483 , 49066951 , 37616148 , 969606027 , 921040821 , 1173659308 , 7926697491
n×2
43100290
n×3
64650435
n×4
86200580
n×5
107750725
n÷2
10775072.5
n÷3
7183381.6666667
n÷3
5387536.25
n÷5
4310029
n2
464408749521025
n3
1.0008075891447E+22
n4
2.1567548663168E+29
n5
4.6478380098583E+36
2 √n
4642.2133729505
3 √n
278.28089976078
4 √n
68.133790243538
5 √n
29.288021813359
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
-21550144
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 21550145 can be divided by 8 positive divisors.
The sum of these divisors (counting 21550145) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001101010001000001
3
Ternary
1111112212020112
4
Quaternary
1102031101001
5
Quinary
21004101040
6
Senary
2045521105
8
Octal
122152101
10
Decimal
21550145
12
Duodecimal
7273195
16
Hexadecimal
148d441
20
Vigesimal
6edf75
36
Base36
ctw75
md5
f72403612a71dd36ac86314f29d558a3
sha1
79394d4d5216261e74cd7ce2fab6fc37d8923af7
sha256
214da8b454c6b99612b78a5948289235c9bf4523fb47f839bcb3b79ea4730a06
sha512
04f6de254279b1c7affea58d5d7dcc5d9fa3e41d3ef28e01351e713627ba519c89ff3fa8b579511729a9774006ea8b1db8a844661c607de0e5c9a440743efd65
ripemd-160
0a721db14442c0c4ea3e136dd64dee6b2d8bead3
Diameter
43100290
Circumference
135403554.43159
Area
1.4589831157581E+15
Volume
4.1921730262851E+22
Surface area
5.8359324630323E+15
Circumference
135403554.43159
Perimeter
86200580
Area
464408749521025
Diagonal
30476507.330107
Surface area
2786452497126150
Volume
1.0008075891447E+22
Space diagonal
37325946.050476
Perimeter
64650435
Area
2.0109488741249E+14
Altitude
18662973.025238
Surface area
2.0109488741249E+14
Volume
1.1794630549119E+21
Height
10158835.776702