56578999 has 4 divisors (see below), whose sum is σ = 58404160. Its totient is φ = 54753840.

The previous prime is 56578997. The next prime is 56579027. The reversal of 56578999 is 99987565.

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 56578999 - 2¹ = 56578997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56578997) 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, 912534 + ... + 912595.

It is an arithmetic number, because the mean of its divisors is an integer number (14601040).

Almost surely, 2^56578999 is an apocalyptic number.

56578999 is a deficient number, since it is larger than the sum of its proper divisors (1825161).

56578999 is a wasteful number, since it uses less digits than its factorization.

56578999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825160.

The product of its digits is 6123600, while the sum is 58.

The square root of 56578999 is about 7521.9012889030. The cubic root of 56578999 is about 383.9002720441.

The spelling of 56578999 in words is "fifty-six million, five hundred seventy-eight thousand, nine hundred ninety-nine".