56389717 has 4 divisors (see below), whose sum is σ = 58334220. Its totient is φ = 54445216.

The previous prime is 56389709. The next prime is 56389741. The reversal of 56389717 is 71798365.

56389717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24512401 + 31877316 = 4951^2 + 5646^2 .

It is a cyclic number.

It is not a de Polignac number, because 56389717 - 2³ = 56389709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56389747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972208 + ... + 972265.

It is an arithmetic number, because the mean of its divisors is an integer number (14583555).

Almost surely, 2^56389717 is an apocalyptic number.

It is an amenable number.

56389717 is a deficient number, since it is larger than the sum of its proper divisors (1944503).

56389717 is a wasteful number, since it uses less digits than its factorization.

56389717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944502.

The product of its digits is 317520, while the sum is 46.

The square root of 56389717 is about 7509.3086898862. The cubic root of 56389717 is about 383.4716878446.

The spelling of 56389717 in words is "fifty-six million, three hundred eighty-nine thousand, seven hundred seventeen".