509528 has 8 divisors (see below), whose sum is σ = 955380. Its totient is φ = 254760.

The previous prime is 509521. The next prime is 509543. The reversal of 509528 is 825905.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 509528.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 509528.

It is not an unprimeable number, because it can be changed into a prime (509521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31838 + ... + 31853.

2⁵⁰⁹⁵²⁸ is an apocalyptic number.

It is an amenable number.

509528 is a deficient number, since it is larger than the sum of its proper divisors (445852).

509528 is a wasteful number, since it uses less digits than its factorization.

509528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63697 (or 63693 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 509528 is about 713.8123002583. The cubic root of 509528 is about 79.8710422354.

The spelling of 509528 in words is "five hundred nine thousand, five hundred twenty-eight".