81124557 is an odd 8-digits composite number following 81124556
and preceding 81124558 . In scientific notation, it is written as 8.1124557 × 10^7.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 54083036 positive integers (up to 81124557) that are relatively prime to 81124557.
81124557 has 4 divisors, whose sum is 108166080
The reverse of 81124557 is 75542118
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
eighty-one million one hundred twenty-four thousand five hundred fifty-seven
Scientific notation
8.1124557 × 10^7
Engineering notation
8.1124557 × 10^6
Prime Factorization
3 × 27041519
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81124557
Product of the distinct prime numbers
The prime factorization of 81124557 is 3 × 27041519.
Since it has a total of 2 prime factors.
1 , 3 , 77 , 68 , 313 , 19 , 3915 , 8073 , 7732 , 2985 , 365865 , 323950 , 3299060 , 5181118 , 35229371 , 78510387 , 883212336 , 867857105 , 178073107 , 3481740097
n×2
162249114
n×3
243373671
n×4
324498228
n×5
405622785
n÷2
40562278.5
n÷3
27041519
n÷3
20281139.25
n÷5
16224911.4
n2
6581193748446249
n3
5.3389642737387E+23
n4
4.3312111154588E+31
n5
3.5136758301507E+39
2 √n
9006.9171751493
3 √n
432.89653810115
4 √n
94.904779516889
5 √n
38.179520315425
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
-81124556
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 81124557 can be divided by 4 positive divisors.
The sum of these divisors (counting 81124557) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101011101110011001101
3
Ternary
12122122112222020
4
Quaternary
10311131303031
5
Quinary
131231441212
6
Senary
12014440353
8
Octal
465356315
10
Decimal
81124557
12
Duodecimal
232030b9
16
Hexadecimal
4d5dccd
20
Vigesimal
1570b7h
36
Base36
1cas3x
md5
f29ff069708183098c93bac957b0de00
sha1
a74c593843afe94403904464ad58feb9c05fe47e
sha256
6da8ca9ca17b277be132c7412e305a65493a85283d11ad9dbef5538d6ccf2c35
sha512
fb5424ce3b8fc5376d29db958494e781f2060b14a42fd377a85a8abd4c4f2316e4642279d258d77bcf02985a35fbf596c0c31498623a659f428ef3e4aa8edc69
ripemd-160
b81904bd8cfc905699868948e2a44b33c11cde89
Diameter
162249114
Circumference
509720624.59385
Area
2.067542993197E+16
Volume
2.2363801253541E+24
Surface area
8.2701719727879E+16
Circumference
509720624.59385
Perimeter
324498228
Area
6581193748446249
Diagonal
114727448.75091
Surface area
39487162490677494
Volume
5.3389642737387E+23
Space diagonal
140511854.46552
Perimeter
243373671
Area
2.8497404866909E+15
Altitude
70255927.232759
Surface area
2.8497404866909E+15
Volume
6.2920297374556E+22
Height
38242482.91697