81072553 is an odd 8-digits composite number following 81072552
and preceding 81072554 . In scientific notation, it is written as 8.1072553 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 81029008 positive integers (up to 81072553) that are relatively prime to 81072553.
81072553 has 4 divisors, whose sum is 81116100
The reverse of 81072553 is 35527018
Previous prime number is 1949
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
eighty-one million seventy-two thousand five hundred fifty-three
Scientific notation
8.1072553 × 10^7
Engineering notation
8.1072553 × 10^6
Prime Factorization
1949 × 41597
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81072553
Product of the distinct prime numbers
The prime factorization of 81072553 is 1949 × 41597.
Since it has a total of 2 prime factors.
10 , 5 , 35 , 90 , 672 , 819 , 3743 , 7555 , 33857 , 51490 , 5548 , 871959 , 4616994 , 7575861 , 76650466 , 19631121 , 738093484 , 108698345 , 3326224666 , 6454346414
n×2
162145106
n×3
243217659
n×4
324290212
n×5
405362765
n÷2
40536276.5
n÷3
27024184.333333
n÷3
20268138.25
n÷5
16214510.6
n2
6572758849937809
n3
5.328703402178E+23
n4
4.3201158899436E+31
n5
3.5024282445359E+39
2 √n
9004.0298200306
3 √n
432.80401714923
4 √n
94.889566444528
5 √n
38.174624147967
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81072552
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81072553 can be divided by 4 positive divisors.
The sum of these divisors (counting 81072553) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101010001000110101001
3
Ternary
12122112220122011
4
Quaternary
10311101012221
5
Quinary
131223310203
6
Senary
12013355521
8
Octal
465210651
10
Decimal
81072553
12
Duodecimal
23198ba1
16
Hexadecimal
4d511a9
20
Vigesimal
156e17d
36
Base36
1c9nzd
md5
234dc148dc7b1b8f2ea7cef769e55d6c
sha1
cf16edc132becfadcfbb1ff3abab0e6e9c4b23e7
sha256
ecc3ed05782c7c7fca382017c39a914db89327c9d2b694ff1e70f4e5eab7574a
sha512
d143a72f1f02377d02835752019503af7d532034d3d0102584d92245517dfe9c02ee20dddba8d7224b3686babce78b3a3992d56ea08c7dc0b87b3d65504b2716
ripemd-160
d475f2f2398baf7ce395b9679e6e7997be52ea6f
Diameter
162145106
Circumference
509393873.82514
Area
2.0648930916782E+16
Volume
2.2320820615255E+24
Surface area
8.2595723667128E+16
Circumference
509393873.82514
Perimeter
324290212
Area
6572758849937809
Diagonal
114653903.98881
Surface area
39436553099626854
Volume
5.328703402178E+23
Space diagonal
140421780.89532
Perimeter
243217659
Area
2.8460880684976E+15
Altitude
70210890.44766
Surface area
2.8460880684976E+15
Volume
6.2799371843532E+22
Height
38217967.996271