209052 has 18 divisors (see below), whose sum is σ = 528528. Its totient is φ = 69672.

The previous prime is 209039. The next prime is 209063. The reversal of 209052 is 250902.

209052 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2868 + ... + 2939.

2²⁰⁹⁰⁵² is an apocalyptic number.

It is an amenable number.

209052 is an abundant number, since it is smaller than the sum of its proper divisors (319476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209052 is a wasteful number, since it uses less digits than its factorization.

209052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817 (or 5812 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 209052 is about 457.2220467125. Note that the first 3 decimals coincide. The cubic root of 209052 is about 59.3496427272.

Adding to 209052 its reverse (250902), we get a palindrome (459954).

The spelling of 209052 in words is "two hundred nine thousand, fifty-two".