556564279 has 2 divisors, whose sum is σ = 556564280. Its totient is φ = 556564278.

The previous prime is 556564277. The next prime is 556564313. The reversal of 556564279 is 972465655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556564279 - 2¹ = 556564277 is a prime.

Together with 556564277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556564273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278282139 + 278282140.

It is an arithmetic number, because the mean of its divisors is an integer number (278282140).

Almost surely, 2^556564279 is an apocalyptic number.

556564279 is a deficient number, since it is larger than the sum of its proper divisors (1).

556564279 is an equidigital number, since it uses as much as digits as its factorization.

556564279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268000, while the sum is 49.

The square root of 556564279 is about 23591.6145907820. The cubic root of 556564279 is about 822.5679358033.

The spelling of 556564279 in words is "five hundred fifty-six million, five hundred sixty-four thousand, two hundred seventy-nine".