512591 has 2 divisors, whose sum is σ = 512592. Its totient is φ = 512590.

The previous prime is 512581. The next prime is 512593. The reversal of 512591 is 195215.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512591 is a prime.

Together with 512593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256295 + 256296.

It is an arithmetic number, because the mean of its divisors is an integer number (256296).

2⁵¹²⁵⁹¹ is an apocalyptic number.

512591 is a deficient number, since it is larger than the sum of its proper divisors (1).

512591 is an equidigital number, since it uses as much as digits as its factorization.

512591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 23.

The square root of 512591 is about 715.9546074997. The cubic root of 512591 is about 80.0307694140.

The spelling of 512591 in words is "five hundred twelve thousand, five hundred ninety-one".