56180917 has 8 divisors (see below), whose sum is σ = 62589240. Its totient is φ = 50070720.

The previous prime is 56180899. The next prime is 56180923. The reversal of 56180917 is 71908165.

It can be written as a sum of positive squares in 4 ways, for example, as 17355556 + 38825361 = 4166^2 + 6231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56180917 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 (56180977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74134 + ... + 74887.

It is an arithmetic number, because the mean of its divisors is an integer number (7823655).

Almost surely, 2^56180917 is an apocalyptic number.

It is an amenable number.

56180917 is a deficient number, since it is larger than the sum of its proper divisors (6408323).

56180917 is a wasteful number, since it uses less digits than its factorization.

56180917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149063.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 56180917 is about 7495.3930517352. The cubic root of 56180917 is about 382.9977957775.

The spelling of 56180917 in words is "fifty-six million, one hundred eighty thousand, nine hundred seventeen".