556328369 has 2 divisors, whose sum is σ = 556328370. Its totient is φ = 556328368.

The previous prime is 556328363. The next prime is 556328389. The reversal of 556328369 is 963823655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421768369 + 134560000 = 20537^2 + 11600^2 .

It is a cyclic number.

It is not a de Polignac number, because 556328369 - 2²⁰ = 555279793 is a prime.

It is a super-2 number, since 2×556328369² = 619002508308400322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556328363) 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, 278164184 + 278164185.

It is an arithmetic number, because the mean of its divisors is an integer number (278164185).

Almost surely, 2^556328369 is an apocalyptic number.

It is an amenable number.

556328369 is a deficient number, since it is larger than the sum of its proper divisors (1).

556328369 is an equidigital number, since it uses as much as digits as its factorization.

556328369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 47.

The square root of 556328369 is about 23586.6141911042. The cubic root of 556328369 is about 822.4516991989.

The spelling of 556328369 in words is "five hundred fifty-six million, three hundred twenty-eight thousand, three hundred sixty-nine".