56539805 has 16 divisors (see below), whose sum is σ = 77873664. Its totient is φ = 38603520.

The previous prime is 56539799. The next prime is 56539859. The reversal of 56539805 is 50893565.

It is not a de Polignac number, because 56539805 - 2⁴ = 56539789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5084 + ... + 11786.

It is an arithmetic number, because the mean of its divisors is an integer number (4867104).

Almost surely, 2^56539805 is an apocalyptic number.

It is an amenable number.

56539805 is a deficient number, since it is larger than the sum of its proper divisors (21333859).

56539805 is a wasteful number, since it uses less digits than its factorization.

56539805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 56539805 is about 7519.2955122139. The cubic root of 56539805 is about 383.8116050871.

The spelling of 56539805 in words is "fifty-six million, five hundred thirty-nine thousand, eight hundred five".