556718273 has 2 divisors, whose sum is σ = 556718274. Its totient is φ = 556718272.

The previous prime is 556718233. The next prime is 556718287. The reversal of 556718273 is 372817655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346816129 + 209902144 = 18623^2 + 14488^2 .

It is a cyclic number.

It is not a de Polignac number, because 556718273 - 2¹⁶ = 556652737 is a prime.

It is not a weakly prime, because it can be changed into another prime (556718233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278359136 + 278359137.

It is an arithmetic number, because the mean of its divisors is an integer number (278359137).

Almost surely, 2^556718273 is an apocalyptic number.

It is an amenable number.

556718273 is a deficient number, since it is larger than the sum of its proper divisors (1).

556718273 is an equidigital number, since it uses as much as digits as its factorization.

556718273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 44.

The square root of 556718273 is about 23594.8781094542. The cubic root of 556718273 is about 822.6437933760.

The spelling of 556718273 in words is "five hundred fifty-six million, seven hundred eighteen thousand, two hundred seventy-three".