556289 has 2 divisors, whose sum is σ = 556290. Its totient is φ = 556288.

The previous prime is 556279. The next prime is 556313. The reversal of 556289 is 982655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409600 + 146689 = 640^2 + 383^2 .

It is a cyclic number.

It is not a de Polignac number, because 556289 - 2⁴ = 556273 is a prime.

It is not a weakly prime, because it can be changed into another prime (556219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278144 + 278145.

It is an arithmetic number, because the mean of its divisors is an integer number (278145).

2⁵⁵⁶²⁸⁹ is an apocalyptic number.

It is an amenable number.

556289 is a deficient number, since it is larger than the sum of its proper divisors (1).

556289 is an equidigital number, since it uses as much as digits as its factorization.

556289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 556289 is about 745.8478397100. The cubic root of 556289 is about 82.2432298268.

The spelling of 556289 in words is "five hundred fifty-six thousand, two hundred eighty-nine".