556243469 has 2 divisors, whose sum is σ = 556243470. Its totient is φ = 556243468.

The previous prime is 556243409. The next prime is 556243481. The reversal of 556243469 is 964342655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318158569 + 238084900 = 17837^2 + 15430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556243469 is a prime.

It is a super-2 number, since 2×556243469² = 618813593610307922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556243409) 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, 278121734 + 278121735.

It is an arithmetic number, because the mean of its divisors is an integer number (278121735).

Almost surely, 2^556243469 is an apocalyptic number.

It is an amenable number.

556243469 is a deficient number, since it is larger than the sum of its proper divisors (1).

556243469 is an equidigital number, since it uses as much as digits as its factorization.

556243469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 44.

The square root of 556243469 is about 23584.8143728120. The cubic root of 556243469 is about 822.4098595796.

The spelling of 556243469 in words is "five hundred fifty-six million, two hundred forty-three thousand, four hundred sixty-nine".