55044204053221 has 2 divisors, whose sum is σ = 55044204053222. Its totient is φ = 55044204053220.

The previous prime is 55044204053183. The next prime is 55044204053227. The reversal of 55044204053221 is 12235040244055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30867069202596 + 24177134850625 = 5555814^2 + 4917025^2 .

It is a cyclic number.

It is not a de Polignac number, because 55044204053221 - 2⁷ = 55044204053093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55044204053227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27522102026610 + 27522102026611.

It is an arithmetic number, because the mean of its divisors is an integer number (27522102026611).

Almost surely, 2^{55044204053221} is an apocalyptic number.

It is an amenable number.

55044204053221 is a deficient number, since it is larger than the sum of its proper divisors (1).

55044204053221 is an equidigital number, since it uses as much as digits as its factorization.

55044204053221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 55044204053221 its reverse (12235040244055), we get a palindrome (67279244297276).

The spelling of 55044204053221 in words is "fifty-five trillion, forty-four billion, two hundred four million, fifty-three thousand, two hundred twenty-one".