56505737 has 4 divisors (see below), whose sum is σ = 57033936. Its totient is φ = 55977540.

The previous prime is 56505731. The next prime is 56505767. The reversal of 56505737 is 73750565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56505737 - 2⁴ = 56505721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56505737.

It is not an unprimeable number, because it can be changed into a prime (56505731) 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, 263939 + ... + 264152.

It is an arithmetic number, because the mean of its divisors is an integer number (14258484).

Almost surely, 2^56505737 is an apocalyptic number.

It is an amenable number.

56505737 is a deficient number, since it is larger than the sum of its proper divisors (528199).

56505737 is a wasteful number, since it uses less digits than its factorization.

56505737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528198.

The product of its (nonzero) digits is 110250, while the sum is 38.

The square root of 56505737 is about 7517.0297990629. The cubic root of 56505737 is about 383.7345011725.

The spelling of 56505737 in words is "fifty-six million, five hundred five thousand, seven hundred thirty-seven".