556516423 has 2 divisors, whose sum is σ = 556516424. Its totient is φ = 556516422.

The previous prime is 556516381. The next prime is 556516439. The reversal of 556516423 is 324615655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556516423 - 2²⁹ = 19645511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556516463) 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, 278258211 + 278258212.

It is an arithmetic number, because the mean of its divisors is an integer number (278258212).

Almost surely, 2^556516423 is an apocalyptic number.

556516423 is a deficient number, since it is larger than the sum of its proper divisors (1).

556516423 is an equidigital number, since it uses as much as digits as its factorization.

556516423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 37.

The square root of 556516423 is about 23590.6003102931. The cubic root of 556516423 is about 822.5443590480.

The spelling of 556516423 in words is "five hundred fifty-six million, five hundred sixteen thousand, four hundred twenty-three".