155561 is an odd 6-digits composite number following 155560
and preceding 155562 . In scientific notation, it is written as 1.55561 × 10^5.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 131040 positive integers (up to 155561) that are relatively prime to 155561.
155561 has 8 divisors, whose sum is 180864
The reverse of 155561 is 165551
Previous prime number is 71
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 23
Digital Root 5
Name
one hundred fifty-five thousand five hundred sixty-one
Scientific notation
1.55561 × 10^5
Engineering notation
1.55561 × 10^3
Prime Factorization
7 × 71 × 313
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
155561
Product of the distinct prime numbers
The prime factorization of 155561 is 7 × 71 × 313.
Since it has a total of 3 prime factors.
5 , 2 , 31 , 28 , 385 , 816 , 9504 , 5444 , 77274 , 9871 , 554375 , 866639 , 3853607 , 5181024 , 75461953 , 71634998 , 939523456 , 805334489 , 5090892199 , 7668566909
n×2
311122
n×3
466683
n×4
622244
n×5
777805
n÷2
77780.5
n÷3
51853.666666667
n÷3
38890.25
n÷5
31112.2
n2
24199224721
n3
3764455596823481
n4
5.8560247709746E+20
n5
9.1096906939758E+25
2 √n
394.412220906
3 √n
53.781582304638
4 √n
19.859814221336
5 √n
10.923961107526
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
-155560
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 155561 can be divided by 8 positive divisors.
The sum of these divisors (counting 155561) is 1, the average is 0.125.
Base
System
Value
2
Binary
100101111110101001
3
Ternary
21220101112
4
Quaternary
211332221
5
Quinary
14434221
6
Senary
3200105
8
Octal
457651
10
Decimal
155561
12
Duodecimal
76035
16
Hexadecimal
25fa9
20
Vigesimal
j8i1
36
Base36
3c15
md5
ca6190a885072bb9403d4b79940bab3b
sha1
8b2679f42b68db17419c116f3529476b9ab5bd76
sha256
6caead0192f6d520d700284a45a788e5828a544784ad0d6f467f7bbc0d7ccbe4
sha512
374009e2953eeee3245391039ca45058869fd659a6219b423edc9cf347fdc48a75069849df0c668209dd706e1d45fc9c8e50394c91708e667fdea4b01511eda2
ripemd-160
7a9f9c48a2760dd603920b1fb8b645ffc2f8967e
Diameter
311122
Circumference
977418.58957016
Area
76024106606.062
Volume
1.5768514730328E+16
Surface area
304096426424.25
Circumference
977418.58957016
Perimeter
622244
Area
24199224721
Diagonal
219996.47597632
Surface area
145195348326
Volume
3764455596823481
Space diagonal
269439.55567622
Perimeter
466683
Area
10478571680.137
Altitude
134719.77783811
Surface area
10478571680.137
Volume
4.4364534666492E+14
Height
73332.158658774