556343 has 2 divisors, whose sum is σ = 556344. Its totient is φ = 556342.

The previous prime is 556331. The next prime is 556351. The reversal of 556343 is 343655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556343 - 2⁴ = 556327 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 (556313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278171 + 278172.

It is an arithmetic number, because the mean of its divisors is an integer number (278172).

2⁵⁵⁶³⁴³ is an apocalyptic number.

556343 is a deficient number, since it is larger than the sum of its proper divisors (1).

556343 is an equidigital number, since it uses as much as digits as its factorization.

556343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 26.

The square root of 556343 is about 745.8840392447. The cubic root of 556343 is about 82.2458909081.

Adding to 556343 its reverse (343655), we get a palindrome (899998).

The spelling of 556343 in words is "five hundred fifty-six thousand, three hundred forty-three".