56855778 has 24 divisors (see below), whose sum is σ = 132277392. Its totient is φ = 16244424.

The previous prime is 56855753. The next prime is 56855779. The reversal of 56855778 is 87755865.

56855778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 56855778.

It is not an unprimeable number, because it can be changed into a prime (56855779) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 96400 + ... + 96987.

It is an arithmetic number, because the mean of its divisors is an integer number (5511558).

Almost surely, 2^56855778 is an apocalyptic number.

56855778 is an abundant number, since it is smaller than the sum of its proper divisors (75421614).

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

56855778 is a wasteful number, since it uses less digits than its factorization.

56855778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193406 (or 193399 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 51.

The square root of 56855778 is about 7540.2770506129. The cubic root of 56855778 is about 384.5252550512.

The spelling of 56855778 in words is "fifty-six million, eight hundred fifty-five thousand, seven hundred seventy-eight".