515740193 has 2 divisors, whose sum is σ = 515740194. Its totient is φ = 515740192.

The previous prime is 515740163. The next prime is 515740207. The reversal of 515740193 is 391047515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 369523729 + 146216464 = 19223^2 + 12092^2 .

It is a cyclic number.

It is not a de Polignac number, because 515740193 - 2⁶ = 515740129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (515740103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257870096 + 257870097.

It is an arithmetic number, because the mean of its divisors is an integer number (257870097).

Almost surely, 2^515740193 is an apocalyptic number.

It is an amenable number.

515740193 is a deficient number, since it is larger than the sum of its proper divisors (1).

515740193 is an equidigital number, since it uses as much as digits as its factorization.

515740193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 515740193 is about 22709.9139804624. The cubic root of 515740193 is about 801.9432928813.

The spelling of 515740193 in words is "five hundred fifteen million, seven hundred forty thousand, one hundred ninety-three".