509247 has 10 divisors (see below), whose sum is σ = 760848. Its totient is φ = 339444.

The previous prime is 509239. The next prime is 509263. The reversal of 509247 is 742905.

It is not a de Polignac number, because 509247 - 2³ = 509239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 509247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3063 + ... + 3224.

2⁵⁰⁹²⁴⁷ is an apocalyptic number.

509247 is a deficient number, since it is larger than the sum of its proper divisors (251601).

509247 is an equidigital number, since it uses as much as digits as its factorization.

509247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299 (or 6290 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 509247 is about 713.6154426580. The cubic root of 509247 is about 79.8563568207.

The spelling of 509247 in words is "five hundred nine thousand, two hundred forty-seven".