155115981 is an odd 9-digits composite number following 155115980
and preceding 155115982 . In scientific notation, it is written as 1.55115981 × 10^8.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 97967880 positive integers (up to 155115981) that are relatively prime to 155115981.
155115981 has 8 divisors, whose sum is 210449984
The reverse of 155115981 is 189511551
Previous prime number is 57
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 36
Digital Root 9
Name
one hundred fifty-five million one hundred fifteen thousand nine hundred eighty-one
Scientific notation
1.55115981 × 10^8
Engineering notation
1.55115981 × 10^6
Prime Factorization
3 × 57 × 907111
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
155115981
Product of the distinct prime numbers
The prime factorization of 155115981 is 3 × 57 × 907111.
Since it has a total of 3 prime factors.
6 , 10 , 43 , 23 , 523 , 664 , 6525 , 7166 , 95948 , 77235 , 953848 , 560838 , 878201 , 7121527 , 18145687 , 75187937 , 667208901 , 394196032 , 5840175258 , 3617393098
n×2
310231962
n×3
465347943
n×4
620463924
n×5
775579905
n÷2
77557990.5
n÷3
51705327
n÷3
38778995.25
n÷5
31023196.2
n2
24060967561592361
n3
3.7322405871256E+24
n4
5.7893016E+32
n5
8.9801319698887E+40
2 √n
12454.556636027
3 √n
537.30248347529
4 √n
111.59998492843
5 √n
43.464161802371
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
-155115980
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 155115981 can be divided by 8 positive divisors.
The sum of these divisors (counting 155115981) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001001111101110000111001101
3
Ternary
101210212201010100
4
Quaternary
21033232013031
5
Quinary
304202202411
6
Senary
23220401313
8
Octal
1117560715
10
Decimal
155115981
12
Duodecimal
43b46239
16
Hexadecimal
93ee1cd
20
Vigesimal
28999j1
36
Base36
2kco99
md5
f06312803cfc167700dbc28c252a7419
sha1
be6c7de1fd464e50d765fa5538d6fccca6eb327a
sha256
f4ed3e0a45674de2699aa91282aebaf69afa81ca1f1877e21fbf7f645d5ed7b2
sha512
77c1dac16b06de53a3db9eb82563867bb0dc9a8abc2171118846b276bd3696ba513df6bdb9c83eacad3410029b035d8a19b87a81a847fa7ec20954a719163e82
ripemd-160
51c2cc6ab38139821cc60b6955398c3e7ae090b7
Diameter
310231962
Circumference
974622452.72795
Area
7.5589758929761E+16
Volume
1.5633572813258E+25
Surface area
3.0235903571904E+17
Circumference
974622452.72795
Perimeter
620463924
Area
24060967561592361
Diagonal
219367124.07101
Surface area
144365805369554166
Volume
3.7322405871256E+24
Space diagonal
268668760.15789
Perimeter
465347943
Area
1.0418704573986E+16
Altitude
134334380.07894
Surface area
1.0418704573986E+16
Volume
4.3984877136269E+23
Height
73122374.690336