556256689 has 2 divisors, whose sum is σ = 556256690. Its totient is φ = 556256688.

The previous prime is 556256683. The next prime is 556256737. The reversal of 556256689 is 986652655.

556256689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546016689 + 10240000 = 23367^2 + 3200^2 .

It is a cyclic number.

It is not a de Polignac number, because 556256689 - 2²⁷ = 422038961 is a prime.

It is not a weakly prime, because it can be changed into another prime (556256683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278128344 + 278128345.

It is an arithmetic number, because the mean of its divisors is an integer number (278128345).

Almost surely, 2^556256689 is an apocalyptic number.

It is an amenable number.

556256689 is a deficient number, since it is larger than the sum of its proper divisors (1).

556256689 is an equidigital number, since it uses as much as digits as its factorization.

556256689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 52.

The square root of 556256689 is about 23585.0946362316. The cubic root of 556256689 is about 822.4163748154.

It can be divided in two parts, 5562566 and 89, that added together give a palindrome (5562655).

The spelling of 556256689 in words is "five hundred fifty-six million, two hundred fifty-six thousand, six hundred eighty-nine".