161661556 is an even 9-digits composite number following 161661555
and preceding 161661557 . In scientific notation, it is written as 1.61661556 × 10^8.
The sum of its digits is 37. It has a total of 5 prime factors and 24 positive divisors.
There are 69202080 positive integers (up to 161661556) that are relatively prime to 161661556.
161661556 has 24 divisors, whose sum is 323703296
The reverse of 161661556 is 655166161
Previous prime number is 997
Is Prime? no Number parity even Number length 9 Sum of Digits 37 Digital Root 1
Name
one hundred sixty-one million six hundred sixty-one thousand five hundred fifty-six
Scientific notation
1.61661556 × 10^8
Engineering notation
1.61661556 × 10^6
Prime Factorization
2 × 2 × 7 × 997 × 5791
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
80830778 Product of the distinct prime numbers
The prime factorization of 161661556 is 2 × 2 × 7 × 997 × 5791.
Since it has a total of 5 prime factors.
1 , 1 , 21 , 30 , 553 , 579 , 6726 , 9241 , 55814 , 66953 , 95557 , 509058 , 736124 , 3173528 , 50908154 , 95586488 , 303360905 , 387927391 , 692238124 , 9723869274
n×2
323323112
n×3
484984668
n×4
646646224
n×5
808307780
n÷2
80830778
n÷3
53887185.333333
n÷3
40415389
n÷5
32332311.2
n2
26134458688341136
n3
4.2249372567749E+24
n4
6.8300993093261E+32
n5
1.1041644819802E+41
2 √n12714.619774103
3 √n544.75628752056
4 √n112.75912279768
5 √n43.824942092544
1 , 2 , 4 , 7 , 14 , 28 , 997 , 1994 , 3988 , 5791 , 6979 , 11582 , 13958 , 23164 , 27916 , 40537 , 81074 , 162148 , 5773627 , 11547254 , 23094508 , 40415389 , 80830778 , 161661556
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-161661555 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 161661556 can be divided by 24 positive divisors.
The sum of these divisors (counting 161661556) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
1001101000101100001001110100
3
Ternary
102021012020222001
4
Quaternary
21220230021310
5
Quinary
312341132211
6
Senary
24012545044
8
Octal
1150541164
10
Decimal
161661556
12
Duodecimal
46182184
16
Hexadecimal
9a2c274
20
Vigesimal
2aa7dhg
36
Base36
2o8yus
md5
171ac65cbfa42d301caf0137fb92b0aa
sha1
8f0fc88ebdce1cc285e184aeac01d47d260dbebd
sha256
886cbdf95cf38cb9ffa110c84fcd6e7706dfcf1ab6df9b8c378cd7dcb924a530
sha512
6a21e6998a7f9f1ceed91ea8e5743d9131a6de62710e8fd4d8c240708ddc972656815e29fd94a038d624dabf5b5e6a08cbea6f72074b4eeaeb11dc3a5acdffda
ripemd-160
b1399ee6752b402843df45f50bef81b393e01917
Diameter
323323112
Circumference
1015749513.395
Area
8.2103823420838E+16
Volume
1.7697375797016E+25
Surface area
3.2841529368335E+17
Circumference
1015749513.395
Perimeter
646646224
Area
26134458688341136
Diagonal
228623965.00954
Surface area
156806752130046816
Volume
4.2249372567749E+24
Space diagonal
280006028.62264
Perimeter
484984668
Area
1.1316552569129E+16
Altitude
140003014.31132
Surface area
1.1316552569129E+16
Volume
4.9791363072554E+23
Height
76207988.336513