855159056 has 40 divisors (see below), whose sum is σ = 1735912704. Its totient is φ = 407594880.

The previous prime is 855159037. The next prime is 855159079. The reversal of 855159056 is 650951558.

It is a super-2 number, since 2×855159056² = 1462594022117622272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 855158998 and 855159016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20366 + ... + 46098.

Almost surely, 2^855159056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855159056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867956352).

855159056 is an abundant number, since it is smaller than the sum of its proper divisors (880753648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855159056 is a wasteful number, since it uses less digits than its factorization.

855159056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25839 (or 25833 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 44.

The square root of 855159056 is about 29243.1027081601. The cubic root of 855159056 is about 949.1808473382.

The spelling of 855159056 in words is "eight hundred fifty-five million, one hundred fifty-nine thousand, fifty-six".