52224515221 has 2 divisors, whose sum is σ = 52224515222. Its totient is φ = 52224515220.

The previous prime is 52224515197. The next prime is 52224515249. The reversal of 52224515221 is 12251542225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32374804900 + 19849710321 = 179930^2 + 140889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52224515221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52224515621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26112257610 + 26112257611.

It is an arithmetic number, because the mean of its divisors is an integer number (26112257611).

Almost surely, 2^52224515221 is an apocalyptic number.

It is an amenable number.

52224515221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52224515221 is an equidigital number, since it uses as much as digits as its factorization.

52224515221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16000, while the sum is 31.

The spelling of 52224515221 in words is "fifty-two billion, two hundred twenty-four million, five hundred fifteen thousand, two hundred twenty-one".