56539785 has 16 divisors (see below), whose sum is σ = 91739520. Its totient is φ = 29729280.

The previous prime is 56539783. The next prime is 56539789. The reversal of 56539785 is 58793565.

It is not a de Polignac number, because 56539785 - 2¹ = 56539783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56539781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25480 + ... + 27609.

It is an arithmetic number, because the mean of its divisors is an integer number (5733720).

Almost surely, 2^56539785 is an apocalyptic number.

It is an amenable number.

56539785 is a deficient number, since it is larger than the sum of its proper divisors (35199735).

56539785 is a wasteful number, since it uses less digits than its factorization.

56539785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53168.

The product of its digits is 1134000, while the sum is 48.

The square root of 56539785 is about 7519.2941823020. The cubic root of 56539785 is about 383.8115598315.

The spelling of 56539785 in words is "fifty-six million, five hundred thirty-nine thousand, seven hundred eighty-five".