513020393 has 2 divisors, whose sum is σ = 513020394. Its totient is φ = 513020392.

The previous prime is 513020377. The next prime is 513020467. The reversal of 513020393 is 393020315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512026384 + 994009 = 22628^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 513020393 - 2⁴ = 513020377 is a prime.

It is not a weakly prime, because it can be changed into another prime (513020303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256510196 + 256510197.

It is an arithmetic number, because the mean of its divisors is an integer number (256510197).

Almost surely, 2^513020393 is an apocalyptic number.

It is an amenable number.

513020393 is a deficient number, since it is larger than the sum of its proper divisors (1).

513020393 is an equidigital number, since it uses as much as digits as its factorization.

513020393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 513020393 is about 22649.9534878110. The cubic root of 513020393 is about 800.5311020228.

The spelling of 513020393 in words is "five hundred thirteen million, twenty thousand, three hundred ninety-three".