530239621 has 2 divisors, whose sum is σ = 530239622. Its totient is φ = 530239620.

The previous prime is 530239609. The next prime is 530239627. The reversal of 530239621 is 126932035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 486864225 + 43375396 = 22065^2 + 6586^2 .

It is a cyclic number.

It is not a de Polignac number, because 530239621 - 2¹⁷ = 530108549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (530239627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265119810 + 265119811.

It is an arithmetic number, because the mean of its divisors is an integer number (265119811).

Almost surely, 2^530239621 is an apocalyptic number.

It is an amenable number.

530239621 is a deficient number, since it is larger than the sum of its proper divisors (1).

530239621 is an equidigital number, since it uses as much as digits as its factorization.

530239621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 530239621 is about 23026.9325139064. The cubic root of 530239621 is about 809.3891757250.

The spelling of 530239621 in words is "five hundred thirty million, two hundred thirty-nine thousand, six hundred twenty-one".