558009 has 15 divisors (see below), whose sum is σ = 843733. Its totient is φ = 367524.

The previous prime is 558007. The next prime is 558017. The reversal of 558009 is 900855.

The square root of 558009 is 747.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 558009 - 2¹ = 558007 is a prime.

It is a super-2 number, since 2×558009² = 622748088162, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (558007) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6682 + ... + 6764.

2⁵⁵⁸⁰⁰⁹ is an apocalyptic number.

558009 is the 747-th square number.

558009 is the 374-th centered octagonal number.

It is an amenable number.

558009 is a deficient number, since it is larger than the sum of its proper divisors (285724).

558009 is an frugal number, since it uses more digits than its factorization.

558009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The cubic root of 558009 is about 82.3279057253.

The spelling of 558009 in words is "five hundred fifty-eight thousand, nine".