52225517221 has 2 divisors, whose sum is σ = 52225517222. Its totient is φ = 52225517220.

The previous prime is 52225517213. The next prime is 52225517251. The reversal of 52225517221 is 12271552225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50420457025 + 1805060196 = 224545^2 + 42486^2 .

It is a cyclic number.

It is not a de Polignac number, because 52225517221 - 2³ = 52225517213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52225517251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26112758610 + 26112758611.

It is an arithmetic number, because the mean of its divisors is an integer number (26112758611).

Almost surely, 2^52225517221 is an apocalyptic number.

It is an amenable number.

52225517221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52225517221 is an equidigital number, since it uses as much as digits as its factorization.

52225517221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28000, while the sum is 34.

The spelling of 52225517221 in words is "fifty-two billion, two hundred twenty-five million, five hundred seventeen thousand, two hundred twenty-one".