509287 has 2 divisors, whose sum is σ = 509288. Its totient is φ = 509286.

The previous prime is 509281. The next prime is 509293. The reversal of 509287 is 782905.

It is a balanced prime because it is at equal distance from previous prime (509281) and next prime (509293).

It is a cyclic number.

It is not a de Polignac number, because 509287 - 2¹⁵ = 476519 is a prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254643 + 254644.

It is an arithmetic number, because the mean of its divisors is an integer number (254644).

2⁵⁰⁹²⁸⁷ is an apocalyptic number.

509287 is a deficient number, since it is larger than the sum of its proper divisors (1).

509287 is an equidigital number, since it uses as much as digits as its factorization.

509287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 509287 is about 713.6434684070. The cubic root of 509287 is about 79.8584476009.

The spelling of 509287 in words is "five hundred nine thousand, two hundred eighty-seven".