56499979 has 4 divisors (see below), whose sum is σ = 57813976. Its totient is φ = 55185984.

The previous prime is 56499913. The next prime is 56499991. The reversal of 56499979 is 97999465.

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 56499979 - 2⁹ = 56499467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56499479) 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, 656934 + ... + 657019.

It is an arithmetic number, because the mean of its divisors is an integer number (14453494).

Almost surely, 2^56499979 is an apocalyptic number.

56499979 is a deficient number, since it is larger than the sum of its proper divisors (1313997).

56499979 is a wasteful number, since it uses less digits than its factorization.

56499979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313996.

The product of its digits is 5511240, while the sum is 58.

The square root of 56499979 is about 7516.6467922871. The cubic root of 56499979 is about 383.7214663998.

The spelling of 56499979 in words is "fifty-six million, four hundred ninety-nine thousand, nine hundred seventy-nine".