56855864 has 16 divisors (see below), whose sum is σ = 114805320. Its totient is φ = 26241120.

The previous prime is 56855861. The next prime is 56855893. The reversal of 56855864 is 46855865.

It is a happy number.

56855864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56855861) 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 3 ways as a sum of consecutive naturals, for example, 273242 + ... + 273449.

Almost surely, 2^56855864 is an apocalyptic number.

It is an amenable number.

56855864 is an abundant number, since it is smaller than the sum of its proper divisors (57949456).

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

56855864 is a wasteful number, since it uses less digits than its factorization.

56855864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546710 (or 546706 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 47.

The square root of 56855864 is about 7540.2827533190. The cubic root of 56855864 is about 384.5254489287.

Subtracting from 56855864 its reverse (46855865), we obtain a palindrome (9999999).

The spelling of 56855864 in words is "fifty-six million, eight hundred fifty-five thousand, eight hundred sixty-four".