522542393 has 2 divisors, whose sum is σ = 522542394. Its totient is φ = 522542392.

The previous prime is 522542341. The next prime is 522542411. The reversal of 522542393 is 393245225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 509314624 + 13227769 = 22568^2 + 3637^2 .

It is a cyclic number.

It is not a de Polignac number, because 522542393 - 2¹⁸ = 522280249 is a prime.

It is not a weakly prime, because it can be changed into another prime (522542323) 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, 261271196 + 261271197.

It is an arithmetic number, because the mean of its divisors is an integer number (261271197).

Almost surely, 2^522542393 is an apocalyptic number.

It is an amenable number.

522542393 is a deficient number, since it is larger than the sum of its proper divisors (1).

522542393 is an equidigital number, since it uses as much as digits as its factorization.

522542393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 35.

The square root of 522542393 is about 22859.1861841143. The cubic root of 522542393 is about 805.4535684490.

The spelling of 522542393 in words is "five hundred twenty-two million, five hundred forty-two thousand, three hundred ninety-three".