517045393 has 2 divisors, whose sum is σ = 517045394. Its totient is φ = 517045392.

The previous prime is 517045387. The next prime is 517045421. The reversal of 517045393 is 393540715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513113104 + 3932289 = 22652^2 + 1983^2 .

It is a cyclic number.

It is not a de Polignac number, because 517045393 - 2⁹ = 517044881 is a prime.

It is not a weakly prime, because it can be changed into another prime (517045093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258522696 + 258522697.

It is an arithmetic number, because the mean of its divisors is an integer number (258522697).

Almost surely, 2^517045393 is an apocalyptic number.

It is an amenable number.

517045393 is a deficient number, since it is larger than the sum of its proper divisors (1).

517045393 is an equidigital number, since it uses as much as digits as its factorization.

517045393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 517045393 is about 22738.6321708233. The cubic root of 517045393 is about 802.6192240770.

The spelling of 517045393 in words is "five hundred seventeen million, forty-five thousand, three hundred ninety-three".