530515330021 has 2 divisors, whose sum is σ = 530515330022. Its totient is φ = 530515330020.

The previous prime is 530515329997. The next prime is 530515330061. The reversal of 530515330021 is 120033515035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476962890625 + 53552439396 = 690625^2 + 231414^2 .

It is a cyclic number.

It is not a de Polignac number, because 530515330021 - 2²⁷ = 530381112293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (530515330061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265257665010 + 265257665011.

It is an arithmetic number, because the mean of its divisors is an integer number (265257665011).

Almost surely, 2^530515330021 is an apocalyptic number.

It is an amenable number.

530515330021 is a deficient number, since it is larger than the sum of its proper divisors (1).

530515330021 is an equidigital number, since it uses as much as digits as its factorization.

530515330021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 28.

Adding to 530515330021 its reverse (120033515035), we get a palindrome (650548845056).

The spelling of 530515330021 in words is "five hundred thirty billion, five hundred fifteen million, three hundred thirty thousand, twenty-one".