155121109 is an odd 9-digits composite number following 155121108
and preceding 155121110 . In scientific notation, it is written as 1.55121109 × 10^8.
The sum of its digits is 25. It has a total of 4 prime factors and 16 positive divisors.
There are 128030400 positive integers (up to 155121109) that are relatively prime to 155121109.
155121109 has 16 divisors, whose sum is 185238144
The reverse of 155121109 is 901121551
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 25
Digital Root 7
Name
one hundred fifty-five million one hundred twenty-one thousand one hundred nine
Scientific notation
1.55121109 × 10^8
Engineering notation
1.55121109 × 10^6
Prime Factorization
11 × 13 × 61 × 17783
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
155121109
Product of the distinct prime numbers
The prime factorization of 155121109 is 11 × 13 × 61 × 17783.
Since it has a total of 4 prime factors.
10 , 9 , 13 , 83 , 670 , 826 , 3160 , 7461 , 79095 , 36153 , 253761 , 385832 , 2749957 , 6397095 , 83062663 , 7786407 , 155052981 , 80869397 , 9527686696 , 7937971254
n×2
310242218
n×3
465363327
n×4
620484436
n×5
775605545
n÷2
77560554.5
n÷3
51707036.333333
n÷3
38780277.25
n÷5
31024221.8
n2
24062558457389881
n3
3.7326107532876E+24
n4
5.7900671951531E+32
n5
8.9816164449666E+40
2 √n
12454.762502754
3 √n
537.30840432831
4 √n
111.60090726671
5 √n
43.464449176081
1 , 11 , 13 , 61 , 143 , 671 , 793 , 8723 , 17783 , 195613 , 231179 , 1084763 , 2542969 , 11932393 , 14101919 , 155121109
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-155121108
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 155121109 can be divided by 16 positive divisors.
The sum of these divisors (counting 155121109) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001001111101111010111010101
3
Ternary
101210212222011021
4
Quaternary
21033233113111
5
Quinary
304202333414
6
Senary
23220441141
8
Octal
1117572725
10
Decimal
155121109
12
Duodecimal
43b491b1
16
Hexadecimal
93ef5d5
20
Vigesimal
289a2f9
36
Base36
2kcs7p
md5
f772c93256b28e6cf271528552b1dba3
sha1
45fca6ee9c216340d865af774c3034fcf831f57f
sha256
2cc6830446561c7f9199af3388e2e2f60f4f03047994ade12638cff348c7e771
sha512
ca4dbf0be2a177baa5e45722d4d43ae41be4be075c241eafc35320ffe42112f125db5601a7e442ab80de35daf92274562591f2a9c2e0ae4964f91731cd60b13f
ripemd-160
844a3e9bd22cdfc11b9c4b683c92aa5f64974bb1
Diameter
310242218
Circumference
974654672.9022
Area
7.5594756876311E+16
Volume
1.5635123361652E+25
Surface area
3.0237902750524E+17
Circumference
974654672.9022
Perimeter
620484436
Area
24062558457389881
Diagonal
219374376.15816
Surface area
144375350744339286
Volume
3.7326107532876E+24
Space diagonal
268677642.11443
Perimeter
465363327
Area
1.0419393452074E+16
Altitude
134338821.05721
Surface area
1.0419393452074E+16
Volume
4.3989239586325E+23
Height
73124792.052718