81550129 is an odd 8-digits composite number following 81550128
and preceding 81550130 . In scientific notation, it is written as 8.1550129 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 80586576 positive integers (up to 81550129) that are relatively prime to 81550129.
81550129 has 8 divisors, whose sum is 82519040
The reverse of 81550129 is 92105518
Previous prime number is 127
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
eighty-one million five hundred fifty thousand one hundred twenty-nine
Scientific notation
8.1550129 × 10^7
Engineering notation
8.1550129 × 10^6
Prime Factorization
283 × 127 × 2269
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81550129
Product of the distinct prime numbers
The prime factorization of 81550129 is 283 × 127 × 2269.
Since it has a total of 3 prime factors.
9 , 1 , 24 , 89 , 98 , 895 , 6313 , 5438 , 22820 , 48250 , 757239 , 6416 , 3954195 , 2657928 , 93522190 , 31943990 , 36253466 , 940284141 , 5220494279 , 2963175831
n×2
163100258
n×3
244650387
n×4
326200516
n×5
407750645
n÷2
40775064.5
n÷3
27183376.333333
n÷3
20387532.25
n÷5
16310025.8
n2
6650423539916641
n3
5.4234289758484E+23
n4
4.4228133260277E+31
n5
3.6068099728048E+39
2 √n
9030.5110043674
3 √n
433.65219680278
4 √n
95.029000859566
5 √n
38.219493778084
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
-81550128
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 81550129 can be divided by 8 positive divisors.
The sum of these divisors (counting 81550129) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111000101101100110001
3
Ternary
12200110011202011
4
Quaternary
10313011230301
5
Quinary
131334101004
6
Senary
12031522521
8
Octal
467055461
10
Decimal
81550129
12
Duodecimal
23389441
16
Hexadecimal
4dc5b31
20
Vigesimal
159df69
36
Base36
1cjwhd
md5
8946f9f4bae472cf0a5f42300e7b5af1
sha1
9b1d2089dd60879a29657e30d91162fae91b1bc4
sha256
0fdfabec3c76f41d99c002c4d49dd5c56ae597a0b677b378a2d1d8336ef8a626
sha512
04a565eee088aceeeeb54a55d8e672e6723cf3dca7fd8c7b51261d0519958bfd82db7e1aaadbfce6f4211814614fcb65715fba9eba7d7639c99e16d74962c258
ripemd-160
4a1edd7ba5155782e11107926919160db1a5193e
Diameter
163100258
Circumference
512394572.3314
Area
2.0892921736263E+16
Volume
2.2717606170388E+24
Surface area
8.3571686945051E+16
Circumference
512394572.3314
Perimeter
326200516
Area
6650423539916641
Diagonal
115329298.44508
Surface area
39902541239499846
Volume
5.4234289758484E+23
Space diagonal
141248966.7918
Perimeter
244650387
Area
2.8797178657469E+15
Altitude
70624483.395898
Surface area
2.8797178657469E+15
Volume
6.39157234351E+22
Height
38443099.481692