55144169 has 2 divisors, whose sum is σ = 55144170. Its totient is φ = 55144168.

The previous prime is 55144163. The next prime is 55144211. The reversal of 55144169 is 96144155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34668544 + 20475625 = 5888^2 + 4525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55144169 is a prime.

It is a super-2 number, since 2×55144169² = 6081758749401122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55144163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27572084 + 27572085.

It is an arithmetic number, because the mean of its divisors is an integer number (27572085).

Almost surely, 2^55144169 is an apocalyptic number.

It is an amenable number.

55144169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55144169 is an equidigital number, since it uses as much as digits as its factorization.

55144169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 55144169 is about 7425.9119978626. The cubic root of 55144169 is about 380.6272397124.

The spelling of 55144169 in words is "fifty-five million, one hundred forty-four thousand, one hundred sixty-nine".