55004421211 has 2 divisors, whose sum is σ = 55004421212. Its totient is φ = 55004421210.

The previous prime is 55004421187. The next prime is 55004421259. The reversal of 55004421211 is 11212440055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55004421211 - 2⁹ = 55004420699 is a prime.

It is not a weakly prime, because it can be changed into another prime (55004421011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502210605 + 27502210606.

It is an arithmetic number, because the mean of its divisors is an integer number (27502210606).

Almost surely, 2^55004421211 is an apocalyptic number.

55004421211 is a deficient number, since it is larger than the sum of its proper divisors (1).

55004421211 is an equidigital number, since it uses as much as digits as its factorization.

55004421211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 55004421211 its reverse (11212440055), we get a palindrome (66216861266).

The spelling of 55004421211 in words is "fifty-five billion, four million, four hundred twenty-one thousand, two hundred eleven".