56328999 has 4 divisors (see below), whose sum is σ = 75105336. Its totient is φ = 37552664.

The previous prime is 56328997. The next prime is 56329019. The reversal of 56328999 is 99982365.

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 56328999 - 2¹ = 56328997 is a prime.

It is a super-2 number, since 2×56328999² = 6345912256684002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56328997) 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, 9388164 + ... + 9388169.

It is an arithmetic number, because the mean of its divisors is an integer number (18776334).

Almost surely, 2^56328999 is an apocalyptic number.

56328999 is a deficient number, since it is larger than the sum of its proper divisors (18776337).

56328999 is a wasteful number, since it uses less digits than its factorization.

56328999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18776336.

The product of its digits is 1049760, while the sum is 51.

The square root of 56328999 is about 7505.2647521590. The cubic root of 56328999 is about 383.3340031914.

The spelling of 56328999 in words is "fifty-six million, three hundred twenty-eight thousand, nine hundred ninety-nine".