56718311 has 4 divisors (see below), whose sum is σ = 61081272. Its totient is φ = 52355352.

The previous prime is 56718301. The next prime is 56718323. The reversal of 56718311 is 11381765.

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

It is a cyclic number.

It is not a de Polignac number, because 56718311 - 2¹⁴ = 56701927 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 (56718301) 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, 2181461 + ... + 2181486.

It is an arithmetic number, because the mean of its divisors is an integer number (15270318).

Almost surely, 2^56718311 is an apocalyptic number.

56718311 is a deficient number, since it is larger than the sum of its proper divisors (4362961).

56718311 is a wasteful number, since it uses less digits than its factorization.

56718311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362960.

The product of its digits is 5040, while the sum is 32.

The square root of 56718311 is about 7531.1560201605. The cubic root of 56718311 is about 384.2151007508.

The spelling of 56718311 in words is "fifty-six million, seven hundred eighteen thousand, three hundred eleven".