556503401 has 2 divisors, whose sum is σ = 556503402. Its totient is φ = 556503400.

The previous prime is 556503391. The next prime is 556503419. The reversal of 556503401 is 104305655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458987776 + 97515625 = 21424^2 + 9875^2 .

It is a cyclic number.

It is not a de Polignac number, because 556503401 - 2¹⁴ = 556487017 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (556503461) 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, 278251700 + 278251701.

It is an arithmetic number, because the mean of its divisors is an integer number (278251701).

Almost surely, 2^556503401 is an apocalyptic number.

It is an amenable number.

556503401 is a deficient number, since it is larger than the sum of its proper divisors (1).

556503401 is an equidigital number, since it uses as much as digits as its factorization.

556503401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 556503401 is about 23590.3243089195. The cubic root of 556503401 is about 822.5379433905.

The spelling of 556503401 in words is "five hundred fifty-six million, five hundred three thousand, four hundred one".