515330393 has 2 divisors, whose sum is σ = 515330394. Its totient is φ = 515330392.

The previous prime is 515330371. The next prime is 515330423. The reversal of 515330393 is 393033515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322453849 + 192876544 = 17957^2 + 13888^2 .

It is a cyclic number.

It is not a de Polignac number, because 515330393 - 2²² = 511136089 is a prime.

It is not a weakly prime, because it can be changed into another prime (515330303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257665196 + 257665197.

It is an arithmetic number, because the mean of its divisors is an integer number (257665197).

Almost surely, 2^515330393 is an apocalyptic number.

It is an amenable number.

515330393 is a deficient number, since it is larger than the sum of its proper divisors (1).

515330393 is an equidigital number, since it uses as much as digits as its factorization.

515330393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18225, while the sum is 32.

The square root of 515330393 is about 22700.8896962212. The cubic root of 515330393 is about 801.7308322615.

The spelling of 515330393 in words is "five hundred fifteen million, three hundred thirty thousand, three hundred ninety-three".