56611 has 2 divisors, whose sum is σ = 56612. Its totient is φ = 56610.

The previous prime is 56599. The next prime is 56629. The reversal of 56611 is 11665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56611 - 2⁹ = 56099 is a prime.

It is not a weakly prime, because it can be changed into another prime (56671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28305 + 28306.

It is an arithmetic number, because the mean of its divisors is an integer number (28306).

2⁵⁶⁶¹¹ is an apocalyptic number.

56611 is a deficient number, since it is larger than the sum of its proper divisors (1).

56611 is an equidigital number, since it uses as much as digits as its factorization.

56611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 19.

The square root of 56611 is about 237.9306621686. The cubic root of 56611 is about 38.3972636216.

It can be divided in two parts, 566 and 11, that multiplied together give a palindrome (6226).

The spelling of 56611 in words is "fifty-six thousand, six hundred eleven".