556745279 has 2 divisors, whose sum is σ = 556745280. Its totient is φ = 556745278.

The previous prime is 556745263. The next prime is 556745297. The reversal of 556745279 is 972547655.

It is a happy number.

556745279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (556745297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556745279 - 2⁴ = 556745263 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 (556745479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278372639 + 278372640.

It is an arithmetic number, because the mean of its divisors is an integer number (278372640).

Almost surely, 2^556745279 is an apocalyptic number.

556745279 is a deficient number, since it is larger than the sum of its proper divisors (1).

556745279 is an equidigital number, since it uses as much as digits as its factorization.

556745279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646000, while the sum is 50.

The square root of 556745279 is about 23595.4503877336. The cubic root of 556745279 is about 822.6570951123.

The spelling of 556745279 in words is "five hundred fifty-six million, seven hundred forty-five thousand, two hundred seventy-nine".