516509263 has 2 divisors, whose sum is σ = 516509264. Its totient is φ = 516509262.

The previous prime is 516509219. The next prime is 516509269. The reversal of 516509263 is 362905615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516509263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516509269) 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, 258254631 + 258254632.

It is an arithmetic number, because the mean of its divisors is an integer number (258254632).

Almost surely, 2^516509263 is an apocalyptic number.

516509263 is a deficient number, since it is larger than the sum of its proper divisors (1).

516509263 is an equidigital number, since it uses as much as digits as its factorization.

516509263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 516509263 is about 22726.8401455196. The cubic root of 516509263 is about 802.3417132648.

The spelling of 516509263 in words is "five hundred sixteen million, five hundred nine thousand, two hundred sixty-three".