556113391 has 2 divisors, whose sum is σ = 556113392. Its totient is φ = 556113390.

The previous prime is 556113317. The next prime is 556113403. The reversal of 556113391 is 193311655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556113391 - 2⁷ = 556113263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556113191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278056695 + 278056696.

It is an arithmetic number, because the mean of its divisors is an integer number (278056696).

Almost surely, 2^556113391 is an apocalyptic number.

556113391 is a deficient number, since it is larger than the sum of its proper divisors (1).

556113391 is an equidigital number, since it uses as much as digits as its factorization.

556113391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12150, while the sum is 34.

The square root of 556113391 is about 23582.0565472988. The cubic root of 556113391 is about 822.3457475041.

The spelling of 556113391 in words is "five hundred fifty-six million, one hundred thirteen thousand, three hundred ninety-one".