530204309 has 2 divisors, whose sum is σ = 530204310. Its totient is φ = 530204308.

The previous prime is 530204293. The next prime is 530204369. The reversal of 530204309 is 903402035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313467025 + 216737284 = 17705^2 + 14722^2 .

It is a cyclic number.

It is not a de Polignac number, because 530204309 - 2⁴ = 530204293 is a prime.

It is a super-2 number, since 2×530204309² = 562233218564334962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (530204369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265102154 + 265102155.

It is an arithmetic number, because the mean of its divisors is an integer number (265102155).

Almost surely, 2^530204309 is an apocalyptic number.

It is an amenable number.

530204309 is a deficient number, since it is larger than the sum of its proper divisors (1).

530204309 is an equidigital number, since it uses as much as digits as its factorization.

530204309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 530204309 is about 23026.1657468194. The cubic root of 530204309 is about 809.3712078831.

The spelling of 530204309 in words is "five hundred thirty million, two hundred four thousand, three hundred nine".