52905848221 has 2 divisors, whose sum is σ = 52905848222. Its totient is φ = 52905848220.

The previous prime is 52905848173. The next prime is 52905848239. The reversal of 52905848221 is 12284850925.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43394722596 + 9511125625 = 208314^2 + 97525^2 .

It is a cyclic number.

It is not a de Polignac number, because 52905848221 - 2²³ = 52897459613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52905848621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26452924110 + 26452924111.

It is an arithmetic number, because the mean of its divisors is an integer number (26452924111).

Almost surely, 2^52905848221 is an apocalyptic number.

It is an amenable number.

52905848221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52905848221 is an equidigital number, since it uses as much as digits as its factorization.

52905848221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 52905848221 in words is "fifty-two billion, nine hundred five million, eight hundred forty-eight thousand, two hundred twenty-one".