530351256521 has 2 divisors, whose sum is σ = 530351256522. Its totient is φ = 530351256520.

The previous prime is 530351256433. The next prime is 530351256557. The reversal of 530351256521 is 125652153035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483496324921 + 46854931600 = 695339^2 + 216460^2 .

It is a cyclic number.

It is not a de Polignac number, because 530351256521 - 2³⁰ = 529277514697 is a prime.

It is not a weakly prime, because it can be changed into another prime (530351256571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265175628260 + 265175628261.

It is an arithmetic number, because the mean of its divisors is an integer number (265175628261).

Almost surely, 2^530351256521 is an apocalyptic number.

It is an amenable number.

530351256521 is a deficient number, since it is larger than the sum of its proper divisors (1).

530351256521 is an equidigital number, since it uses as much as digits as its factorization.

530351256521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 530351256521 in words is "five hundred thirty billion, three hundred fifty-one million, two hundred fifty-six thousand, five hundred twenty-one".