55044217 has 2 divisors, whose sum is σ = 55044218. Its totient is φ = 55044216.

The previous prime is 55044193. The next prime is 55044229. The reversal of 55044217 is 71244055.

55044217 is nontrivially palindromic in base 9.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37896336 + 17147881 = 6156^2 + 4141^2 .

It is a cyclic number.

It is not a de Polignac number, because 55044217 - 2⁷ = 55044089 is a prime.

It is not a weakly prime, because it can be changed into another prime (55044287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27522108 + 27522109.

It is an arithmetic number, because the mean of its divisors is an integer number (27522109).

Almost surely, 2^55044217 is an apocalyptic number.

It is an amenable number.

55044217 is a deficient number, since it is larger than the sum of its proper divisors (1).

55044217 is an equidigital number, since it uses as much as digits as its factorization.

55044217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 55044217 is about 7419.1789977059. The cubic root of 55044217 is about 380.3971309892.

The spelling of 55044217 in words is "fifty-five million, forty-four thousand, two hundred seventeen".