556406239 has 2 divisors, whose sum is σ = 556406240. Its totient is φ = 556406238.

The previous prime is 556406161. The next prime is 556406251. The reversal of 556406239 is 932604655.

556406239 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 is a cyclic number.

It is not a de Polignac number, because 556406239 - 2⁹ = 556405727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556401239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278203119 + 278203120.

It is an arithmetic number, because the mean of its divisors is an integer number (278203120).

Almost surely, 2^556406239 is an apocalyptic number.

556406239 is a deficient number, since it is larger than the sum of its proper divisors (1).

556406239 is an equidigital number, since it uses as much as digits as its factorization.

556406239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 556406239 is about 23588.2648577635. The cubic root of 556406239 is about 822.4900706173.

The spelling of 556406239 in words is "five hundred fifty-six million, four hundred six thousand, two hundred thirty-nine".