556566233 has 2 divisors, whose sum is σ = 556566234. Its totient is φ = 556566232.

The previous prime is 556566229. The next prime is 556566287. The reversal of 556566233 is 332665655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317801929 + 238764304 = 17827^2 + 15452^2 .

It is a cyclic number.

It is not a de Polignac number, because 556566233 - 2² = 556566229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (556566203) 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, 278283116 + 278283117.

It is an arithmetic number, because the mean of its divisors is an integer number (278283117).

Almost surely, 2^556566233 is an apocalyptic number.

It is an amenable number.

556566233 is a deficient number, since it is larger than the sum of its proper divisors (1).

556566233 is an equidigital number, since it uses as much as digits as its factorization.

556566233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486000, while the sum is 41.

The square root of 556566233 is about 23591.6560037654. The cubic root of 556566233 is about 822.5688984329.

The spelling of 556566233 in words is "five hundred fifty-six million, five hundred sixty-six thousand, two hundred thirty-three".