56604399 has 4 divisors (see below), whose sum is σ = 75472536. Its totient is φ = 37736264.

The previous prime is 56604397. The next prime is 56604409. The reversal of 56604399 is 99340665.

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 56604399 - 2¹ = 56604397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56604399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56604397) 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, 9434064 + ... + 9434069.

It is an arithmetic number, because the mean of its divisors is an integer number (18868134).

Almost surely, 2^56604399 is an apocalyptic number.

56604399 is a deficient number, since it is larger than the sum of its proper divisors (18868137).

56604399 is a wasteful number, since it uses less digits than its factorization.

56604399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18868136.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 56604399 is about 7523.5895023586. The cubic root of 56604399 is about 383.9577115432.

The spelling of 56604399 in words is "fifty-six million, six hundred four thousand, three hundred ninety-nine".