556313 has 2 divisors, whose sum is σ = 556314. Its totient is φ = 556312.

The previous prime is 556289. The next prime is 556321. The reversal of 556313 is 313655.

556313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405769 + 150544 = 637^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 556313 - 2¹² = 552217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278156 + 278157.

It is an arithmetic number, because the mean of its divisors is an integer number (278157).

2⁵⁵⁶³¹³ is an apocalyptic number.

It is an amenable number.

556313 is a deficient number, since it is larger than the sum of its proper divisors (1).

556313 is an equidigital number, since it uses as much as digits as its factorization.

556313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 23.

The square root of 556313 is about 745.8639286090. The cubic root of 556313 is about 82.2444125508.

Adding to 556313 its reverse (313655), we get a palindrome (869968).

The spelling of 556313 in words is "five hundred fifty-six thousand, three hundred thirteen".