509023 has 2 divisors, whose sum is σ = 509024. Its totient is φ = 509022.

The previous prime is 508987. The next prime is 509027. The reversal of 509023 is 320905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509023 - 2¹³ = 500831 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 (509027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254511 + 254512.

It is an arithmetic number, because the mean of its divisors is an integer number (254512).

2⁵⁰⁹⁰²³ is an apocalyptic number.

509023 is a deficient number, since it is larger than the sum of its proper divisors (1).

509023 is an equidigital number, since it uses as much as digits as its factorization.

509023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 509023 is about 713.4584781191. The cubic root of 509023 is about 79.8446464278.

Adding to 509023 its reverse (320905), we get a palindrome (829928).

It can be divided in two parts, 50902 and 3, that added together give a palindrome (50905).

The spelling of 509023 in words is "five hundred nine thousand, twenty-three".