56604287 has 4 divisors (see below), whose sum is σ = 59583480. Its totient is φ = 53625096.

The previous prime is 56604269. The next prime is 56604293. The reversal of 56604287 is 78240665.

It is a happy number.

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 56604287 - 2²² = 52409983 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 56604287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56604217) 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, 1489568 + ... + 1489605.

It is an arithmetic number, because the mean of its divisors is an integer number (14895870).

Almost surely, 2^56604287 is an apocalyptic number.

56604287 is a deficient number, since it is larger than the sum of its proper divisors (2979193).

56604287 is a wasteful number, since it uses less digits than its factorization.

56604287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979192.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 56604287 is about 7523.5820590992. The cubic root of 56604287 is about 383.9574583044.

The spelling of 56604287 in words is "fifty-six million, six hundred four thousand, two hundred eighty-seven".