55243321223 has 2 divisors, whose sum is σ = 55243321224. Its totient is φ = 55243321222.

The previous prime is 55243321201. The next prime is 55243321229. The reversal of 55243321223 is 32212334255.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55243321223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55243321223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55243321229) 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, 27621660611 + 27621660612.

It is an arithmetic number, because the mean of its divisors is an integer number (27621660612).

Almost surely, 2^55243321223 is an apocalyptic number.

55243321223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55243321223 is an equidigital number, since it uses as much as digits as its factorization.

55243321223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 32.

Adding to 55243321223 its reverse (32212334255), we get a palindrome (87455655478).

The spelling of 55243321223 in words is "fifty-five billion, two hundred forty-three million, three hundred twenty-one thousand, two hundred twenty-three".