56784057 has 16 divisors (see below), whose sum is σ = 84611520. Its totient is φ = 33574400.

The previous prime is 56784023. The next prime is 56784083. The reversal of 56784057 is 75048765.

It is a cyclic number.

It is not a de Polignac number, because 56784057 - 2⁷ = 56783929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56784257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19632 + ... + 22337.

It is an arithmetic number, because the mean of its divisors is an integer number (5288220).

Almost surely, 2^56784057 is an apocalyptic number.

It is an amenable number.

56784057 is a deficient number, since it is larger than the sum of its proper divisors (27827463).

56784057 is a wasteful number, since it uses less digits than its factorization.

56784057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42024.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 56784057 is about 7535.5196901076. The cubic root of 56784057 is about 384.3634999269.

The spelling of 56784057 in words is "fifty-six million, seven hundred eighty-four thousand, fifty-seven".