513212393 has 2 divisors, whose sum is σ = 513212394. Its totient is φ = 513212392.

The previous prime is 513212389. The next prime is 513212407. The reversal of 513212393 is 393212315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512705449 + 506944 = 22643^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 513212393 - 2² = 513212389 is a prime.

It is not a weakly prime, because it can be changed into another prime (513211393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256606196 + 256606197.

It is an arithmetic number, because the mean of its divisors is an integer number (256606197).

Almost surely, 2^513212393 is an apocalyptic number.

It is an amenable number.

513212393 is a deficient number, since it is larger than the sum of its proper divisors (1).

513212393 is an equidigital number, since it uses as much as digits as its factorization.

513212393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 29.

The square root of 513212393 is about 22654.1915106234. The cubic root of 513212393 is about 800.6309569234.

The spelling of 513212393 in words is "five hundred thirteen million, two hundred twelve thousand, three hundred ninety-three".