52343240221 has 2 divisors, whose sum is σ = 52343240222. Its totient is φ = 52343240220.

The previous prime is 52343240207. The next prime is 52343240231. The reversal of 52343240221 is 12204234325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44776676025 + 7566564196 = 211605^2 + 86986^2 .

It is a cyclic number.

It is not a de Polignac number, because 52343240221 - 2⁹ = 52343239709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52343240221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52343240231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26171620110 + 26171620111.

It is an arithmetic number, because the mean of its divisors is an integer number (26171620111).

Almost surely, 2^52343240221 is an apocalyptic number.

It is an amenable number.

52343240221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52343240221 is an equidigital number, since it uses as much as digits as its factorization.

52343240221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 52343240221 its reverse (12204234325), we get a palindrome (64547474546).

The spelling of 52343240221 in words is "fifty-two billion, three hundred forty-three million, two hundred forty thousand, two hundred twenty-one".