56759399 has 4 divisors (see below), whose sum is σ = 57167880. Its totient is φ = 56350920.

The previous prime is 56759389. The next prime is 56759411. The reversal of 56759399 is 99395765.

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-56759399 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 56759399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56759309) 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, 204032 + ... + 204309.

It is an arithmetic number, because the mean of its divisors is an integer number (14291970).

Almost surely, 2^56759399 is an apocalyptic number.

56759399 is a deficient number, since it is larger than the sum of its proper divisors (408481).

56759399 is a wasteful number, since it uses less digits than its factorization.

56759399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408480.

The product of its digits is 2296350, while the sum is 53.

The square root of 56759399 is about 7533.8833943724. The cubic root of 56759399 is about 384.3078563310.

The spelling of 56759399 in words is "fifty-six million, seven hundred fifty-nine thousand, three hundred ninety-nine".