55293045209 has 2 divisors, whose sum is σ = 55293045210. Its totient is φ = 55293045208.

The previous prime is 55293045191. The next prime is 55293045211. The reversal of 55293045209 is 90254039255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43026375184 + 12266670025 = 207428^2 + 110755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55293045209 is a prime.

Together with 55293045211, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55293045209.

It is not a weakly prime, because it can be changed into another prime (55293045289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27646522604 + 27646522605.

It is an arithmetic number, because the mean of its divisors is an integer number (27646522605).

Almost surely, 2^55293045209 is an apocalyptic number.

It is an amenable number.

55293045209 is a deficient number, since it is larger than the sum of its proper divisors (1).

55293045209 is an equidigital number, since it uses as much as digits as its factorization.

55293045209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 55293045209 in words is "fifty-five billion, two hundred ninety-three million, forty-five thousand, two hundred nine".