56705013 has 24 divisors (see below), whose sum is σ = 87930648. Its totient is φ = 35085312.

The previous prime is 56704997. The next prime is 56705039. The reversal of 56705013 is 31050765.

It can be written as a sum of positive squares in 4 ways, for example, as 33837489 + 22867524 = 5817^2 + 4782^2 .

It is not a de Polignac number, because 56705013 - 2⁴ = 56704997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56705113) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8631 + ... + 13707.

It is an arithmetic number, because the mean of its divisors is an integer number (3663777).

Almost surely, 2^56705013 is an apocalyptic number.

It is an amenable number.

56705013 is a deficient number, since it is larger than the sum of its proper divisors (31225635).

56705013 is a wasteful number, since it uses less digits than its factorization.

56705013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173 (or 5170 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 56705013 is about 7530.2731026172. The cubic root of 56705013 is about 384.1850711085.

Adding to 56705013 its reverse (31050765), we get a palindrome (87755778).

The spelling of 56705013 in words is "fifty-six million, seven hundred five thousand, thirteen".