56856810 has 32 divisors (see below), whose sum is σ = 139034880. Its totient is φ = 14875328.

The previous prime is 56856809. The next prime is 56856817. The reversal of 56856810 is 1865865.

56856810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56856810² = 6465393686752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56856817) 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 15 ways as a sum of consecutive naturals, for example, 16290 + ... + 19469.

It is an arithmetic number, because the mean of its divisors is an integer number (4344840).

Almost surely, 2^56856810 is an apocalyptic number.

56856810 is an abundant number, since it is smaller than the sum of its proper divisors (82178070).

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

56856810 is a wasteful number, since it uses less digits than its factorization.

56856810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35822.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 56856810 is about 7540.3454828012. The cubic root of 56856810 is about 384.5275815674.

The spelling of 56856810 in words is "fifty-six million, eight hundred fifty-six thousand, eight hundred ten".