56771856 has 30 divisors (see below), whose sum is σ = 158882750. Its totient is φ = 18923904.

The previous prime is 56771783. The next prime is 56771861. The reversal of 56771856 is 65817765.

56771856 is a `hidden beast` number, since 567 + 7 + 1 + 85 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52707600 + 4064256 = 7260^2 + 2016^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196981 + ... + 197268.

Almost surely, 2^56771856 is an apocalyptic number.

It is an amenable number.

56771856 is an abundant number, since it is smaller than the sum of its proper divisors (102110894).

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

56771856 is a wasteful number, since it uses less digits than its factorization.

56771856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394263 (or 394254 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 56771856 is about 7534.7100806866. The cubic root of 56771856 is about 384.3359689894.

The spelling of 56771856 in words is "fifty-six million, seven hundred seventy-one thousand, eight hundred fifty-six".