55717 has 2 divisors, whose sum is σ = 55718. Its totient is φ = 55716.

The previous prime is 55711. The next prime is 55721. The reversal of 55717 is 71755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54756 + 961 = 234^2 + 31^2 .

It is a cyclic number.

It is not a de Polignac number, because 55717 - 2⁷ = 55589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55691 and 55700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27858 + 27859.

It is an arithmetic number, because the mean of its divisors is an integer number (27859).

2⁵⁵⁷¹⁷ is an apocalyptic number.

It is an amenable number.

55717 is a deficient number, since it is larger than the sum of its proper divisors (1).

55717 is an equidigital number, since it uses as much as digits as its factorization.

55717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1225, while the sum is 25.

The square root of 55717 is about 236.0444873324. The cubic root of 55717 is about 38.1940672237.

The spelling of 55717 in words is "fifty-five thousand, seven hundred seventeen".