55228169 has 2 divisors, whose sum is σ = 55228170. Its totient is φ = 55228168.

The previous prime is 55228163. The next prime is 55228177. The reversal of 55228169 is 96182255.

55228169 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., 53875600 + 1352569 = 7340^2 + 1163^2 .

It is a cyclic number.

It is not a de Polignac number, because 55228169 - 2⁴ = 55228153 is a prime.

It is a super-2 number, since 2×55228169² = 6100301302185122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55228163) 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, 27614084 + 27614085.

It is an arithmetic number, because the mean of its divisors is an integer number (27614085).

Almost surely, 2^55228169 is an apocalyptic number.

It is an amenable number.

55228169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55228169 is an equidigital number, since it uses as much as digits as its factorization.

55228169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 38.

The square root of 55228169 is about 7431.5657165903. The cubic root of 55228169 is about 380.8204089268.

The spelling of 55228169 in words is "fifty-five million, two hundred twenty-eight thousand, one hundred sixty-nine".