556552169 has 2 divisors, whose sum is σ = 556552170. Its totient is φ = 556552168.

The previous prime is 556552151. The next prime is 556552177. The reversal of 556552169 is 961255655.

556552169 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 can be written as a sum of positive squares in only one way, i.e., 318158569 + 238393600 = 17837^2 + 15440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556552169 is a prime.

It is a super-2 number, since 2×556552169² = 619500633637209122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (556552189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278276084 + 278276085.

It is an arithmetic number, because the mean of its divisors is an integer number (278276085).

Almost surely, 2^556552169 is an apocalyptic number.

It is an amenable number.

556552169 is a deficient number, since it is larger than the sum of its proper divisors (1).

556552169 is an equidigital number, since it uses as much as digits as its factorization.

556552169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 405000, while the sum is 44.

The square root of 556552169 is about 23591.3579303948. The cubic root of 556552169 is about 822.5619698137.

The spelling of 556552169 in words is "five hundred fifty-six million, five hundred fifty-two thousand, one hundred sixty-nine".