56500311 has 8 divisors (see below), whose sum is σ = 86095744. Its totient is φ = 32285880.

The previous prime is 56500289. The next prime is 56500313. The reversal of 56500311 is 11300565.

It is a happy number.

56500311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 56500311 - 2¹³ = 56492119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2690491 = 56500311 / (5 + 6 + 5 + 0 + 0 + 3 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56500313) 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 7 ways as a sum of consecutive naturals, for example, 1345225 + ... + 1345266.

It is an arithmetic number, because the mean of its divisors is an integer number (10761968).

Almost surely, 2^56500311 is an apocalyptic number.

56500311 is a deficient number, since it is larger than the sum of its proper divisors (29595433).

56500311 is a wasteful number, since it uses less digits than its factorization.

56500311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690501.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 56500311 is about 7516.6688765703. The cubic root of 56500311 is about 383.7222179946.

Adding to 56500311 its reverse (11300565), we get a palindrome (67800876).

The spelling of 56500311 in words is "fifty-six million, five hundred thousand, three hundred eleven".