556373 has 2 divisors, whose sum is σ = 556374. Its totient is φ = 556372.

The previous prime is 556351. The next prime is 556399. The reversal of 556373 is 373655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 487204 + 69169 = 698^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 556373 - 2¹⁰ = 555349 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556313) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278186 + 278187.

It is an arithmetic number, because the mean of its divisors is an integer number (278187).

2⁵⁵⁶³⁷³ is an apocalyptic number.

It is an amenable number.

556373 is a deficient number, since it is larger than the sum of its proper divisors (1).

556373 is an equidigital number, since it uses as much as digits as its factorization.

556373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 29.

The square root of 556373 is about 745.9041493382. The cubic root of 556373 is about 82.2473692121.

It can be divided in two parts, 556 and 373, that added together give a palindrome (929).

The spelling of 556373 in words is "five hundred fifty-six thousand, three hundred seventy-three".