56315617 has 4 divisors (see below), whose sum is σ = 56347056. Its totient is φ = 56284180.

The previous prime is 56315579. The next prime is 56315621. The reversal of 56315617 is 71651365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56315617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56315647) 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, 12859 + ... + 16672.

It is an arithmetic number, because the mean of its divisors is an integer number (14086764).

Almost surely, 2^56315617 is an apocalyptic number.

It is an amenable number.

56315617 is a deficient number, since it is larger than the sum of its proper divisors (31439).

56315617 is a wasteful number, since it uses less digits than its factorization.

56315617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31438.

The product of its digits is 18900, while the sum is 34.

The square root of 56315617 is about 7504.3731916796. The cubic root of 56315617 is about 383.3036447497.

The spelling of 56315617 in words is "fifty-six million, three hundred fifteen thousand, six hundred seventeen".