556255639 has 2 divisors, whose sum is σ = 556255640. Its totient is φ = 556255638.

The previous prime is 556255627. The next prime is 556255649. The reversal of 556255639 is 936552655.

556255639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556255639 - 2¹¹ = 556253591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556255649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278127819 + 278127820.

It is an arithmetic number, because the mean of its divisors is an integer number (278127820).

Almost surely, 2^556255639 is an apocalyptic number.

556255639 is a deficient number, since it is larger than the sum of its proper divisors (1).

556255639 is an equidigital number, since it uses as much as digits as its factorization.

556255639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1215000, while the sum is 46.

The square root of 556255639 is about 23585.0723763994. The cubic root of 556255639 is about 822.4158573459.

The spelling of 556255639 in words is "five hundred fifty-six million, two hundred fifty-five thousand, six hundred thirty-nine".