52056345360221 has 2 divisors, whose sum is σ = 52056345360222. Its totient is φ = 52056345360220.

The previous prime is 52056345360197. The next prime is 52056345360301. The reversal of 52056345360221 is 12206354365025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35899402375321 + 16156942984900 = 5991611^2 + 4019570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52056345360221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52056345363221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26028172680110 + 26028172680111.

It is an arithmetic number, because the mean of its divisors is an integer number (26028172680111).

Almost surely, 2^{52056345360221} is an apocalyptic number.

It is an amenable number.

52056345360221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52056345360221 is an equidigital number, since it uses as much as digits as its factorization.

52056345360221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 52056345360221 in words is "fifty-two trillion, fifty-six billion, three hundred forty-five million, three hundred sixty thousand, two hundred twenty-one".