556353449 has 2 divisors, whose sum is σ = 556353450. Its totient is φ = 556353448.

The previous prime is 556353443. The next prime is 556353451. The reversal of 556353449 is 944353655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432432025 + 123921424 = 20795^2 + 11132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556353449 is a prime.

Together with 556353451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556353443) 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, 278176724 + 278176725.

It is an arithmetic number, because the mean of its divisors is an integer number (278176725).

Almost surely, 2^556353449 is an apocalyptic number.

It is an amenable number.

556353449 is a deficient number, since it is larger than the sum of its proper divisors (1).

556353449 is an equidigital number, since it uses as much as digits as its factorization.

556353449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 44.

The square root of 556353449 is about 23587.1458425983. The cubic root of 556353449 is about 822.4640580741.

The spelling of 556353449 in words is "five hundred fifty-six million, three hundred fifty-three thousand, four hundred forty-nine".