50175252221 has 2 divisors, whose sum is σ = 50175252222. Its totient is φ = 50175252220.

The previous prime is 50175252217. The next prime is 50175252247. The reversal of 50175252221 is 12225257105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43963605625 + 6211646596 = 209675^2 + 78814^2 .

It is a cyclic number.

It is not a de Polignac number, because 50175252221 - 2² = 50175252217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50175252271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25087626110 + 25087626111.

It is an arithmetic number, because the mean of its divisors is an integer number (25087626111).

Almost surely, 2^50175252221 is an apocalyptic number.

It is an amenable number.

50175252221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50175252221 is an equidigital number, since it uses as much as digits as its factorization.

50175252221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 32.

The spelling of 50175252221 in words is "fifty billion, one hundred seventy-five million, two hundred fifty-two thousand, two hundred twenty-one".