556573 has 2 divisors, whose sum is σ = 556574. Its totient is φ = 556572.

The previous prime is 556559. The next prime is 556579. The reversal of 556573 is 375655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284089 + 272484 = 533^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 556573 - 2¹⁷ = 425501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556579) 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, 278286 + 278287.

It is an arithmetic number, because the mean of its divisors is an integer number (278287).

2⁵⁵⁶⁵⁷³ is an apocalyptic number.

It is an amenable number.

556573 is a deficient number, since it is larger than the sum of its proper divisors (1).

556573 is an equidigital number, since it uses as much as digits as its factorization.

556573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 31.

The square root of 556573 is about 746.0382027752. The cubic root of 556573 is about 82.2572232149.

The spelling of 556573 in words is "five hundred fifty-six thousand, five hundred seventy-three".