556981169 has 2 divisors, whose sum is σ = 556981170. Its totient is φ = 556981168.

The previous prime is 556981157. The next prime is 556981189. The reversal of 556981169 is 961189655.

556981169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286049569 + 270931600 = 16913^2 + 16460^2 .

It is a cyclic number.

It is not a de Polignac number, because 556981169 - 2⁸ = 556980913 is a prime.

It is a super-2 number, since 2×556981169² = 620456045241213122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556981189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278490584 + 278490585.

It is an arithmetic number, because the mean of its divisors is an integer number (278490585).

Almost surely, 2^556981169 is an apocalyptic number.

It is an amenable number.

556981169 is a deficient number, since it is larger than the sum of its proper divisors (1).

556981169 is an equidigital number, since it uses as much as digits as its factorization.

556981169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 50.

The square root of 556981169 is about 23600.4484915012. The cubic root of 556981169 is about 822.7732638458.

The spelling of 556981169 in words is "five hundred fifty-six million, nine hundred eighty-one thousand, one hundred sixty-nine".