530325781 has 2 divisors, whose sum is σ = 530325782. Its totient is φ = 530325780.

The previous prime is 530325721. The next prime is 530325797. The reversal of 530325781 is 187523035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421645156 + 108680625 = 20534^2 + 10425^2 .

It is a cyclic number.

It is not a de Polignac number, because 530325781 - 2¹¹ = 530323733 is a prime.

It is a super-2 number, since 2×530325781² = 562490867986519922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (530325721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265162890 + 265162891.

It is an arithmetic number, because the mean of its divisors is an integer number (265162891).

Almost surely, 2^530325781 is an apocalyptic number.

It is an amenable number.

530325781 is a deficient number, since it is larger than the sum of its proper divisors (1).

530325781 is an equidigital number, since it uses as much as digits as its factorization.

530325781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 530325781 is about 23028.8032906619. The cubic root of 530325781 is about 809.4330132604.

The spelling of 530325781 in words is "five hundred thirty million, three hundred twenty-five thousand, seven hundred eighty-one".