55552169 has 2 divisors, whose sum is σ = 55552170. Its totient is φ = 55552168.

The previous prime is 55552163. The next prime is 55552183. The reversal of 55552169 is 96125555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51308569 + 4243600 = 7163^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 55552169 - 2⁸ = 55551913 is a prime.

It is a super-2 number, since 2×55552169² = 6172086961209122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55552163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27776084 + 27776085.

It is an arithmetic number, because the mean of its divisors is an integer number (27776085).

Almost surely, 2^55552169 is an apocalyptic number.

It is an amenable number.

55552169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55552169 is an equidigital number, since it uses as much as digits as its factorization.

55552169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67500, while the sum is 38.

The square root of 55552169 is about 7453.3327444842. The cubic root of 55552169 is about 381.5636607501.

The spelling of 55552169 in words is "fifty-five million, five hundred fifty-two thousand, one hundred sixty-nine".