252089475221 has 2 divisors, whose sum is σ = 252089475222. Its totient is φ = 252089475220.

The previous prime is 252089475217. The next prime is 252089475247. The reversal of 252089475221 is 122574980252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197926222321 + 54163252900 = 444889^2 + 232730^2 .

It is a cyclic number.

It is not a de Polignac number, because 252089475221 - 2² = 252089475217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252089475251) 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, 126044737610 + 126044737611.

It is an arithmetic number, because the mean of its divisors is an integer number (126044737611).

Almost surely, 2^252089475221 is an apocalyptic number.

It is an amenable number.

252089475221 is a deficient number, since it is larger than the sum of its proper divisors (1).

252089475221 is an equidigital number, since it uses as much as digits as its factorization.

252089475221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 252089475221 in words is "two hundred fifty-two billion, eighty-nine million, four hundred seventy-five thousand, two hundred twenty-one".