56311 has 2 divisors, whose sum is σ = 56312. Its totient is φ = 56310.

The previous prime is 56299. The next prime is 56333. The reversal of 56311 is 11365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56311 - 2⁹ = 55799 is a prime.

56311 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56611) 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 as a sum of consecutive naturals, namely, 28155 + 28156.

It is an arithmetic number, because the mean of its divisors is an integer number (28156).

2⁵⁶³¹¹ is an apocalyptic number.

56311 is a deficient number, since it is larger than the sum of its proper divisors (1).

56311 is an equidigital number, since it uses as much as digits as its factorization.

56311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 16.

The square root of 56311 is about 237.2993889583. The cubic root of 56311 is about 38.3293169495.

Adding to 56311 its reverse (11365), we get a palindrome (67676).

The spelling of 56311 in words is "fifty-six thousand, three hundred eleven".