56985540 has 24 divisors (see below), whose sum is σ = 159559680. Its totient is φ = 15196128.

The previous prime is 56985499. The next prime is 56985553. The reversal of 56985540 is 4558965.

56985540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 56985492 and 56985501.

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, 474820 + ... + 474939.

It is an arithmetic number, because the mean of its divisors is an integer number (6648320).

Almost surely, 2^56985540 is an apocalyptic number.

It is an amenable number.

56985540 is an abundant number, since it is smaller than the sum of its proper divisors (102574140).

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

56985540 is a wasteful number, since it uses less digits than its factorization.

56985540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949771 (or 949769 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 56985540 is about 7548.8767376345. The cubic root of 56985540 is about 384.8175669097.

The spelling of 56985540 in words is "fifty-six million, nine hundred eighty-five thousand, five hundred forty".