556825639 has 2 divisors, whose sum is σ = 556825640. Its totient is φ = 556825638.

The previous prime is 556825631. The next prime is 556825673. The reversal of 556825639 is 936528655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556825639 - 2³ = 556825631 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 556825592 and 556825601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556825631) 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, 278412819 + 278412820.

It is an arithmetic number, because the mean of its divisors is an integer number (278412820).

Almost surely, 2^556825639 is an apocalyptic number.

556825639 is a deficient number, since it is larger than the sum of its proper divisors (1).

556825639 is an equidigital number, since it uses as much as digits as its factorization.

556825639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944000, while the sum is 49.

The square root of 556825639 is about 23597.1531969431. The cubic root of 556825639 is about 822.6966736810.

The spelling of 556825639 in words is "five hundred fifty-six million, eight hundred twenty-five thousand, six hundred thirty-nine".