55044161 has 2 divisors, whose sum is σ = 55044162. Its totient is φ = 55044160.

The previous prime is 55044151. The next prime is 55044163. The reversal of 55044161 is 16144055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53875600 + 1168561 = 7340^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 55044161 - 2¹⁸ = 54782017 is a prime.

It is a Sophie Germain prime.

Together with 55044163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55044161.

It is not a weakly prime, because it can be changed into another prime (55044163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27522080 + 27522081.

It is an arithmetic number, because the mean of its divisors is an integer number (27522081).

Almost surely, 2^55044161 is an apocalyptic number.

It is an amenable number.

55044161 is a deficient number, since it is larger than the sum of its proper divisors (1).

55044161 is an equidigital number, since it uses as much as digits as its factorization.

55044161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 55044161 is about 7419.1752237024. The cubic root of 55044161 is about 380.3970019884.

The spelling of 55044161 in words is "fifty-five million, forty-four thousand, one hundred sixty-one".