155989 is an odd 6-digits composite number following 155988
and preceding 155990 . In scientific notation, it is written as 1.55989 × 10^5.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 155200 positive integers (up to 155989) that are relatively prime to 155989.
155989 has 4 divisors, whose sum is 156780
The reverse of 155989 is 989551
Previous prime number is 389
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 37
Digital Root 1
Name
one hundred fifty-five thousand nine hundred eighty-nine
Scientific notation
1.55989 × 10^5
Engineering notation
1.55989 × 10^3
Prime Factorization
389 × 401
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
155989
Product of the distinct prime numbers
The prime factorization of 155989 is 389 × 401.
Since it has a total of 2 prime factors.
7 , 9 , 76 , 52 , 509 , 959 , 7971 , 9780 , 17989 , 91240 , 465668 , 545492 , 9752634 , 4001824 , 82936879 , 13943408 , 298827771 , 231498499 , 9976267247 , 135815892
n×2
311978
n×3
467967
n×4
623956
n×5
779945
n÷2
77994.5
n÷3
51996.333333333
n÷3
38997.25
n÷5
31197.8
n2
24332568121
n3
3795612968626669
n4
5.9207387136311E+20
n5
9.2357011120059E+25
2 √n
394.95442775085
3 √n
53.830860806116
4 √n
19.873460386929
5 √n
10.929965592377
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
-155988
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 155989 can be divided by 4 positive divisors.
The sum of these divisors (counting 155989) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110000101010101
3
Ternary
21220222101
4
Quaternary
212011111
5
Quinary
14442424
6
Senary
3202101
8
Octal
460525
10
Decimal
155989
12
Duodecimal
76331
16
Hexadecimal
26155
20
Vigesimal
j9j9
36
Base36
3cd1
md5
dddeb7ae59fc0fd59f9b0a9b28e8fd03
sha1
2d703567d4a7dd462ba1b67a6dfa7dbb7bbcd097
sha256
0be2407512cc2a40bfb570464757fd56cd0a1d33f0bf3824dfed4f0119133c12
sha512
bad7e4035a825b7d221252bbbca31ba0924768ba66ded92b35322fdd8e3f1a0a56e55912397d4625bf4b886d7c0c82c55e066abccdbc621c75fd812c63549f65
ripemd-160
04cf92d3d7ca4c7fda7484088d5af3ee4d48030e
Diameter
311978
Circumference
980107.79288164
Area
76443017251.907
Volume
1.5899026424144E+16
Surface area
305772069007.63
Circumference
980107.79288164
Perimeter
623956
Area
24332568121
Diagonal
220601.75938102
Surface area
145995408726
Volume
3795612968626669
Space diagonal
270180.87342186
Perimeter
467967
Area
10536311066.051
Altitude
135090.43671093
Surface area
10536311066.051
Volume
4.4731727814592E+14
Height
73533.919793672