509044 has 6 divisors (see below), whose sum is σ = 890834. Its totient is φ = 254520.

The previous prime is 509027. The next prime is 509053. The reversal of 509044 is 440905.

It can be written as a sum of positive squares in only one way, i.e., 490000 + 19044 = 700^2 + 138^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63627 + ... + 63634.

2⁵⁰⁹⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

509044 is a deficient number, since it is larger than the sum of its proper divisors (381790).

509044 is a wasteful number, since it uses less digits than its factorization.

509044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127265 (or 127263 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 509044 is about 713.4731950116. The cubic root of 509044 is about 79.8457444230.

Adding to 509044 its reverse (440905), we get a palindrome (949949).

The spelling of 509044 in words is "five hundred nine thousand, forty-four".