556728269 has 2 divisors, whose sum is σ = 556728270. Its totient is φ = 556728268.

The previous prime is 556728251. The next prime is 556728311. The reversal of 556728269 is 962827655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390576169 + 166152100 = 19763^2 + 12890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556728269 is a prime.

It is a super-2 number, since 2×556728269² = 619892731007472722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556728209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278364134 + 278364135.

It is an arithmetic number, because the mean of its divisors is an integer number (278364135).

Almost surely, 2^556728269 is an apocalyptic number.

It is an amenable number.

556728269 is a deficient number, since it is larger than the sum of its proper divisors (1).

556728269 is an equidigital number, since it uses as much as digits as its factorization.

556728269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 50.

The square root of 556728269 is about 23595.0899341367. The cubic root of 556728269 is about 822.6487169304.

The spelling of 556728269 in words is "five hundred fifty-six million, seven hundred twenty-eight thousand, two hundred sixty-nine".