56503939 has 4 divisors (see below), whose sum is σ = 58960656. Its totient is φ = 54047224.

The previous prime is 56503927. The next prime is 56503943. The reversal of 56503939 is 93930565.

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

It is a cyclic number.

It is not a de Polignac number, because 56503939 - 2¹¹ = 56501891 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56503999) 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, 1228324 + ... + 1228369.

It is an arithmetic number, because the mean of its divisors is an integer number (14740164).

Almost surely, 2^56503939 is an apocalyptic number.

56503939 is a deficient number, since it is larger than the sum of its proper divisors (2456717).

56503939 is a wasteful number, since it uses less digits than its factorization.

56503939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456716.

The product of its (nonzero) digits is 109350, while the sum is 40.

The square root of 56503939 is about 7516.9102030023. The cubic root of 56503939 is about 383.7304310138.

The spelling of 56503939 in words is "fifty-six million, five hundred three thousand, nine hundred thirty-nine".