556559 has 2 divisors, whose sum is σ = 556560. Its totient is φ = 556558.

The previous prime is 556537. The next prime is 556573. The reversal of 556559 is 955655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278279 + 278280.

It is an arithmetic number, because the mean of its divisors is an integer number (278280).

2⁵⁵⁶⁵⁵⁹ is an apocalyptic number.

556559 is a deficient number, since it is larger than the sum of its proper divisors (1).

556559 is an equidigital number, since it uses as much as digits as its factorization.

556559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33750, while the sum is 35.

The square root of 556559 is about 746.0288198186. The cubic root of 556559 is about 82.2565335115.

The spelling of 556559 in words is "five hundred fifty-six thousand, five hundred fifty-nine".