2155405 is an odd 7-digits composite number following 2155404
and preceding 2155406 . In scientific notation, it is written as 2.155405 × 10^6.
The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors.
There are 1477968 positive integers (up to 2155405) that are relatively prime to 2155405.
2155405 has 8 divisors, whose sum is 2956032
The reverse of 2155405 is 5045512
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 22
Digital Root 4
Name
two million one hundred fifty-five thousand four hundred five
Scientific notation
2.155405 × 10^6
Engineering notation
2.155405 × 10^6
Prime Factorization
5 × 7 × 61583
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
2155405
Product of the distinct prime numbers
The prime factorization of 2155405 is 5 × 7 × 61583.
Since it has a total of 3 prime factors.
8 , 2 , 53 , 32 , 868 , 187 , 5116 , 4377 , 6934 , 29265 , 887173 , 359356 , 9515243 , 2679865 , 41740112 , 55205925 , 486947180 , 716315237 , 1282984380 , 9314461718
n×2
4310810
n×3
6466215
n×4
8621620
n×5
10777025
n÷2
1077702.5
n÷3
718468.33333333
n÷3
538851.25
n÷5
431081
n2
4645770714025
n3
1.0013517425863E+19
n4
2.1583185527292E+25
n5
4.6520506001454E+31
2 √n
1468.1297626572
3 √n
129.17435310947
4 √n
38.316181472809
5 √n
18.480162136209
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
-2155404
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 2155405 can be divided by 8 positive divisors.
The sum of these divisors (counting 2155405) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000001110001110001101
3
Ternary
11001111122211
4
Quaternary
20032032031
5
Quinary
1022433110
6
Senary
114110421
8
Octal
10161615
10
Decimal
2155405
12
Duodecimal
87b411
16
Hexadecimal
20e38d
20
Vigesimal
d98a5
36
Base36
1a74d
md5
8d09c68f4da6ec32e62390347e3679af
sha1
2b79f335b409d53ef938980919f2d5c39109d89f
sha256
59c67939627821eaf23417faf7bd053a8c0eb0100b510055bae13069517c3bf2
sha512
a3cd22c590e607ca346c9362aecb698b7cf14f67225dad4c387cbe6066e3f3138d71dc53a41416627e8d5a0cea50eb621161f8c788c9275e13721c15f6026099
ripemd-160
67faacfedf9576d30c3685c337342b13137c89ea
Diameter
4310810
Circumference
13542809.027021
Area
14595119145444
Volume
4.1944523708913E+19
Surface area
58380476581774
Circumference
13542809.027021
Perimeter
8621620
Area
4645770714025
Diagonal
3048202.9834068
Surface area
27874624284150
Volume
1.0013517425863E+19
Space diagonal
3733270.970888
Perimeter
6466215
Area
2011677729251.7
Altitude
1866635.485444
Surface area
2011677729251.7
Volume
1.1801043458929E+18
Height
1016067.6611356