52031242403221 has 2 divisors, whose sum is σ = 52031242403222. Its totient is φ = 52031242403220.

The previous prime is 52031242403183. The next prime is 52031242403233. The reversal of 52031242403221 is 12230424213025.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49820460006321 + 2210782396900 = 7058361^2 + 1486870^2 .

It is a cyclic number.

It is not a de Polignac number, because 52031242403221 - 2¹⁹ = 52031241878933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52031242403251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26015621201610 + 26015621201611.

It is an arithmetic number, because the mean of its divisors is an integer number (26015621201611).

Almost surely, 2^{52031242403221} is an apocalyptic number.

It is an amenable number.

52031242403221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52031242403221 is an equidigital number, since it uses as much as digits as its factorization.

52031242403221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 52031242403221 its reverse (12230424213025), we get a palindrome (64261666616246).

The spelling of 52031242403221 in words is "fifty-two trillion, thirty-one billion, two hundred forty-two million, four hundred three thousand, two hundred twenty-one".