2155491 is an odd 7-digits composite number following 2155490
and preceding 2155492 . In scientific notation, it is written as 2.155491 × 10^6.
The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors.
There are 1254528 positive integers (up to 2155491) that are relatively prime to 2155491.
2155491 has 16 divisors, whose sum is 2548800
The reverse of 2155491 is 1945512
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 27
Digital Root 9
Name
two million one hundred fifty-five thousand four hundred ninety-one
Scientific notation
2.155491 × 10^6
Engineering notation
2.155491 × 10^6
Prime Factorization
117 × 9 × 23 × 89
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
2155491
Product of the distinct prime numbers
The prime factorization of 2155491 is 117 × 9 × 23 × 89.
Since it has a total of 4 prime factors.
5 , 2 , 86 , 79 , 531 , 584 , 7553 , 9714 , 739 , 83572 , 499471 , 942359 , 6234372 , 2156158 , 68609694 , 51131979 , 15967861 , 925715117 , 9854620512 , 3410752009
n×2
4310982
n×3
6466473
n×4
8621964
n×5
10777455
n÷2
1077745.5
n÷3
718497
n÷3
538872.75
n÷5
431098.2
n2
4646141451081
n3
1.0014716082532E+19
n4
2.1586630383453E+25
n5
4.652978751186E+31
2 √n
1468.1590513292
3 √n
129.17607109235
4 √n
38.31656366807
5 √n
18.480309604419
1 , 9 , 23 , 89 , 117 , 207 , 801 , 1053 , 2047 , 2691 , 10413 , 18423 , 24219 , 93717 , 239499 , 2155491
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2155490
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2155491 can be divided by 16 positive divisors.
The sum of these divisors (counting 2155491) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1000001110001111100011
3
Ternary
11001111210000
4
Quaternary
20032033203
5
Quinary
1022433431
6
Senary
114111043
8
Octal
10161743
10
Decimal
2155491
12
Duodecimal
87b483
16
Hexadecimal
20e3e3
20
Vigesimal
d98eb
36
Base36
1a76r
md5
b87f3f08f289f0f072efd5e6fedcfab7
sha1
02993b526e33c62b617ab6753ce3a500e15bd305
sha256
877c1d1cab5c0ed09856ddae23689dce680df2ff056edaa69973181404c0a861
sha512
60e2d7eb0b21f83dbe7c2b2663752d75bfa9849667c76d5e1b7faee6fc3796b2b470552c00086589f57bf2e17743e888d9ff06ec74aa2bf17a0b58968254599a
ripemd-160
46f3eb982923e7d74f29186b0ad5ee8f589fca9e
Diameter
4310982
Circumference
13543349.380958
Area
14596283850255
Volume
4.1949544630227E+19
Surface area
58385135401020
Circumference
13543349.380958
Perimeter
8621964
Area
4646141451081
Diagonal
3048324.6057731
Surface area
27876848706486
Volume
1.0014716082532E+19
Space diagonal
3733419.9272574
Perimeter
6466473
Area
2011838263106
Altitude
1866709.9636287
Surface area
2011838263106
Volume
1.1802456089361E+18
Height
1016108.2019244