556718233 has 2 divisors, whose sum is σ = 556718234. Its totient is φ = 556718232.

The previous prime is 556718189. The next prime is 556718273. The reversal of 556718233 is 332817655.

It is an a-pointer prime, because the next prime (556718273) can be obtained adding 556718233 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320696464 + 236021769 = 17908^2 + 15363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556718233 is a prime.

It is not a weakly prime, because it can be changed into another prime (556718273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278359116 + 278359117.

It is an arithmetic number, because the mean of its divisors is an integer number (278359117).

Almost surely, 2^556718233 is an apocalyptic number.

It is an amenable number.

556718233 is a deficient number, since it is larger than the sum of its proper divisors (1).

556718233 is an equidigital number, since it uses as much as digits as its factorization.

556718233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 556718233 is about 23594.8772618126. The cubic root of 556718233 is about 822.6437736738.

The spelling of 556718233 in words is "five hundred fifty-six million, seven hundred eighteen thousand, two hundred thirty-three".