512209 has 4 divisors (see below), whose sum is σ = 517104. Its totient is φ = 507316.

The previous prime is 512207. The next prime is 512249. The reversal of 512209 is 902215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 512209 - 2¹ = 512207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2287 + ... + 2500.

It is an arithmetic number, because the mean of its divisors is an integer number (129276).

2⁵¹²²⁰⁹ is an apocalyptic number.

It is an amenable number.

512209 is a deficient number, since it is larger than the sum of its proper divisors (4895).

512209 is a wasteful number, since it uses less digits than its factorization.

512209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4894.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 512209 is about 715.6877810889. The cubic root of 512209 is about 80.0108839358.

The spelling of 512209 in words is "five hundred twelve thousand, two hundred nine".