53042502221 has 2 divisors, whose sum is σ = 53042502222. Its totient is φ = 53042502220.

The previous prime is 53042502197. The next prime is 53042502257. The reversal of 53042502221 is 12220524035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41569093225 + 11473408996 = 203885^2 + 107114^2 .

It is a cyclic number.

It is not a de Polignac number, because 53042502221 - 2¹⁸ = 53042240077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53042501221) 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, 26521251110 + 26521251111.

It is an arithmetic number, because the mean of its divisors is an integer number (26521251111).

Almost surely, 2^53042502221 is an apocalyptic number.

It is an amenable number.

53042502221 is a deficient number, since it is larger than the sum of its proper divisors (1).

53042502221 is an equidigital number, since it uses as much as digits as its factorization.

53042502221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 53042502221 in words is "fifty-three billion, forty-two million, five hundred two thousand, two hundred twenty-one".