56517365 has 4 divisors (see below), whose sum is σ = 67820844. Its totient is φ = 45213888.

The previous prime is 56517361. The next prime is 56517379. The reversal of 56517365 is 56371565.

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 12666481 + 43850884 = 3559^2 + 6622^2 .

It is a cyclic number.

It is not a de Polignac number, because 56517365 - 2² = 56517361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56517361) 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, 5651732 + ... + 5651741.

It is an arithmetic number, because the mean of its divisors is an integer number (16955211).

Almost surely, 2^56517365 is an apocalyptic number.

It is an amenable number.

56517365 is a deficient number, since it is larger than the sum of its proper divisors (11303479).

56517365 is a wasteful number, since it uses less digits than its factorization.

56517365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11303478.

The product of its digits is 94500, while the sum is 38.

The square root of 56517365 is about 7517.8032030640. The cubic root of 56517365 is about 383.7608215603.

The spelling of 56517365 in words is "fifty-six million, five hundred seventeen thousand, three hundred sixty-five".