155996981 is an odd 9-digits composite number following 155996980
and preceding 155996982 . In scientific notation, it is written as 1.55996981 × 10^8.
The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors.
There are 125846208 positive integers (up to 155996981) that are relatively prime to 155996981.
155996981 has 8 divisors, whose sum is 188769600
The reverse of 155996981 is 189699551
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 53
Digital Root 8
Name
one hundred fifty-five million nine hundred ninety-six thousand nine hundred eighty-one
Scientific notation
1.55996981 × 10^8
Engineering notation
1.55996981 × 10^6
Prime Factorization
7 × 17 × 1310899
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
155996981
Product of the distinct prime numbers
The prime factorization of 155996981 is 7 × 17 × 1310899.
Since it has a total of 3 prime factors.
8 , 1 , 50 , 45 , 160 , 298 , 8545 , 9642 , 60712 , 20030 , 509743 , 516908 , 2110664 , 8155966 , 69778479 , 30438789 , 314504050 , 122976534 , 4121040251 , 4358259534
n×2
311993962
n×3
467990943
n×4
623987924
n×5
779984905
n÷2
77998490.5
n÷3
51998993.666667
n÷3
38999245.25
n÷5
31199396.2
n2
24335058081114361
n3
3.7961955931135E+24
n4
5.9219505181121E+32
n5
9.2380640245687E+40
2 √n
12489.875139488
3 √n
538.31778855409
4 √n
111.75810994952
5 √n
43.513422011575
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
-155996980
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 155996981 can be divided by 8 positive divisors.
The sum of these divisors (counting 155996981) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001010011000101001100110101
3
Ternary
101212112110121222
4
Quaternary
21103011030311
5
Quinary
304413400411
6
Senary
23251320125
8
Octal
1123051465
10
Decimal
155996981
12
Duodecimal
442b0045
16
Hexadecimal
94c5335
20
Vigesimal
28ejc91
36
Base36
2kvk1h
md5
1b7be850dd0f5264ee4bb4c8f7de4e15
sha1
37462f6b169816d9e085ffd9a5ac8fcde757364b
sha256
a1d476941d106e40f16f91f45579bd35c4af54b61a6c92c27cfbc80236cb985f
sha512
c695f73a8d674e8e482b917ffba16c4f3ed051274404e807e7685edabddf73f8729ca813294de69fc5e4655be8b816f514a63072c1aa0a21be7c245bcbba2523
ripemd-160
5d3931da0831c45ffe2b3590cf14c1e9f0b12b47
Diameter
311993962
Circumference
980157938.98357
Area
7.645083969231E+16
Volume
1.5901466915887E+25
Surface area
3.0580335876924E+17
Circumference
980157938.98357
Perimeter
623987924
Area
24335058081114361
Diagonal
220613046.21946
Surface area
146010348486686166
Volume
3.7961955931135E+24
Space diagonal
270194696.91936
Perimeter
467990943
Area
1.0537389250407E+16
Altitude
135097348.45968
Surface area
1.0537389250407E+16
Volume
4.4738594110017E+23
Height
73537682.073153