56783985 has 32 divisors (see below), whose sum is σ = 93089280. Its totient is φ = 29548800.

The previous prime is 56783983. The next prime is 56784023. The reversal of 56783985 is 58938765.

56783985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56783985 - 2¹ = 56783983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56783983) 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 31 ways as a sum of consecutive naturals, for example, 209400 + ... + 209670.

It is an arithmetic number, because the mean of its divisors is an integer number (2909040).

Almost surely, 2^56783985 is an apocalyptic number.

It is an amenable number.

56783985 is a deficient number, since it is larger than the sum of its proper divisors (36305295).

56783985 is a wasteful number, since it uses less digits than its factorization.

56783985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its digits is 1814400, while the sum is 51.

The square root of 56783985 is about 7535.5149127316. The cubic root of 56783985 is about 384.3633374742.

The spelling of 56783985 in words is "fifty-six million, seven hundred eighty-three thousand, nine hundred eighty-five".