81497455 is an odd 8-digits composite number following 81497454
and preceding 81497456 . In scientific notation, it is written as 8.1497455 × 10^7.
The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors.
There are 60048000 positive integers (up to 81497455) that are relatively prime to 81497455.
81497455 has 16 divisors, whose sum is 105555744
The reverse of 81497455 is 55479418
Previous prime number is 557
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
eighty-one million four hundred ninety-seven thousand four hundred fifty-five
Scientific notation
8.1497455 × 10^7
Engineering notation
8.1497455 × 10^6
Prime Factorization
13 × 5 × 557 × 2251
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81497455
Product of the distinct prime numbers
The prime factorization of 81497455 is 13 × 5 × 557 × 2251.
Since it has a total of 4 prime factors.
5 , 1 , 43 , 41 , 823 , 412 , 3539 , 223 , 70839 , 33087 , 372699 , 501447 , 1623518 , 7933453 , 49539555 , 49070558 , 31797524 , 107389639 , 5353972020 , 8177688908
n×2
162994910
n×3
244492365
n×4
325989820
n×5
407487275
n÷2
40748727.5
n÷3
27165818.333333
n÷3
20374363.75
n÷5
16299491
n2
6641835171477025
n3
5.4129266300487E+23
n4
4.4113974445069E+31
n5
3.5951766472082E+39
2 √n
9027.5940870201
3 √n
433.55881000762
4 √n
95.013652108632
5 √n
38.214555235441
1 , 5 , 13 , 65 , 557 , 2251 , 2785 , 7241 , 11255 , 29263 , 36205 , 146315 , 1253807 , 6269035 , 16299491 , 81497455
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
-81497454
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 81497455 can be divided by 16 positive divisors.
The sum of these divisors (counting 81497455) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110111000110101101111
3
Ternary
12200100111111021
4
Quaternary
10312320311233
5
Quinary
131330404310
6
Senary
12030435011
8
Octal
466706557
10
Decimal
81497455
12
Duodecimal
23362a67
16
Hexadecimal
4db8d6f
20
Vigesimal
15973cf
36
Base36
1ciru7
md5
cde1601e17657c27cf6688c3a0370fbe
sha1
722c2fcb4549380a3e80d545f70b4c2704b75ac3
sha256
700d31f32460b64c86ebd8adf3c6ba778d4086f912ca90776542d397c9b72d3f
sha512
4741ef273b20269ce69a9bad0a43102e5b476dc857fb8e0c183a53f602184a22e670919546ea32f1e7f6693cec8bcf42e1bfd746815053a1c4e2d8b4005f36f2
ripemd-160
08b39238dbea8de21dadaf65e2c45b18870da426
Diameter
162994910
Circumference
512063611.82853
Area
2.0865940581067E+16
Volume
2.2673614047175E+24
Surface area
8.3463762324266E+16
Circumference
512063611.82853
Perimeter
325989820
Area
6641835171477025
Diagonal
115254806.15989
Surface area
39851011028862150
Volume
5.4129266300487E+23
Space diagonal
141157732.74756
Perimeter
244492365
Area
2.875998993124E+15
Altitude
70578866.373779
Surface area
2.875998993124E+15
Volume
6.3791952102878E+22
Height
38418268.719964