56755939 has 4 divisors (see below), whose sum is σ = 56833480. Its totient is φ = 56678400.

The previous prime is 56755913. The next prime is 56755957. The reversal of 56755939 is 93955765.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56755939 is a prime.

It is a super-2 number, since 2×56755939² = 6442473223543442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56755892 and 56755901.

It is not an unprimeable number, because it can be changed into a prime (56755999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37662 + ... + 39139.

It is an arithmetic number, because the mean of its divisors is an integer number (14208370).

Almost surely, 2^56755939 is an apocalyptic number.

56755939 is a deficient number, since it is larger than the sum of its proper divisors (77541).

56755939 is an equidigital number, since it uses as much as digits as its factorization.

56755939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77540.

The product of its digits is 1275750, while the sum is 49.

The square root of 56755939 is about 7533.6537616219. The cubic root of 56755939 is about 384.3000471562.

The spelling of 56755939 in words is "fifty-six million, seven hundred fifty-five thousand, nine hundred thirty-nine".