855 is an odd 3-digits composite number following 854
and preceding 856 . In scientific notation, it is written as 8.55 × 10^2.
The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors.
There are 432 positive integers (up to 855) that are relatively prime to 855.
855 has 4 divisors, whose sum is 920
The reverse of 855 is 558
Previous prime number is 45
Is Prime? no
Number parity odd
Number length 3
Sum of Digits 18
Digital Root 9
Name
eight hundred fifty-five
Scientific notation
8.55 × 10^2
Engineering notation
8.55 × 10^0
Prime Factorization
45 × 19
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
855
Product of the distinct prime numbers
The prime factorization of 855 is 45 × 19.
Since it has a total of 2 prime factors.
8 , 9 , 71 , 32 , 631 , 544 , 7244 , 2419 , 49401 , 51750 , 884466 , 560805 , 7067849 , 2202089 , 54528246 , 96935349 , 193024120 , 978233717 , 2090840542 , 7428698586
n×2
1710
n×3
2565
n×4
3420
n×5
4275
n÷2
427.5
n÷3
285
n÷3
213.75
n÷5
171
n2
731025
n3
625026375
n4
534397550625
n5
456909905784375
2 √n
29.240383034427
3 √n
9.4912199580293
4 √n
5.4074377513224
5 √n
3.8582753911826
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
-854
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 855 can be divided by 4 positive divisors.
The sum of these divisors (counting 855) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101010111
3
Ternary
1011200
4
Quaternary
31113
5
Quinary
11410
6
Senary
3543
8
Octal
1527
10
Decimal
855
12
Duodecimal
5b3
16
Hexadecimal
357
20
Vigesimal
22f
36
Base36
nr
md5
addfa9b7e234254d26e9c7f2af1005cb
sha1
ebcab2a931b194b46b7af052d17915e104a90428
sha256
3097fc802d49355a0a256d4b07ab9f7257fcf35077cdb8133d59f607fedb229e
sha512
d93c3809a83059dc651e83f84639afbea8920e61fcdeeccac689b3dd666fbf849a00a30748bc9610347e1ff9f63059fd9adaa150f501244d066ec84a0b1df3cf
ripemd-160
94b57e310877e397d3b74880102da8a3796ec302
Diameter
1710
Circumference
5372.1234376385
Area
2296582.7695905
Volume
2618104357.3331
Surface area
9186331.0783619
Circumference
5372.1234376385
Perimeter
3420
Area
731025
Diagonal
1209.152595829
Surface area
4386150
Volume
625026375
Space diagonal
1480.9034404714
Perimeter
2565
Area
316543.11040076
Altitude
740.4517202357
Surface area
316543.11040076
Volume
73660064.697158
Height
403.05086527633