530305309 has 2 divisors, whose sum is σ = 530305310. Its totient is φ = 530305308.

The previous prime is 530305267. The next prime is 530305351. The reversal of 530305309 is 903503035.

It is a balanced prime because it is at equal distance from previous prime (530305267) and next prime (530305351).

It can be written as a sum of positive squares in only one way, i.e., 492973209 + 37332100 = 22203^2 + 6110^2 .

It is a cyclic number.

It is not a de Polignac number, because 530305309 - 2¹⁷ = 530174237 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 (530305379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265152654 + 265152655.

It is an arithmetic number, because the mean of its divisors is an integer number (265152655).

Almost surely, 2^530305309 is an apocalyptic number.

It is an amenable number.

530305309 is a deficient number, since it is larger than the sum of its proper divisors (1).

530305309 is an equidigital number, since it uses as much as digits as its factorization.

530305309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 28.

The square root of 530305309 is about 23028.3587995324. The cubic root of 530305309 is about 809.4225976967.

The spelling of 530305309 in words is "five hundred thirty million, three hundred five thousand, three hundred nine".