209000052 has 36 divisors (see below), whose sum is σ = 529488960. Its totient is φ = 69510672.

The previous prime is 209000039. The next prime is 209000063. The reversal of 209000052 is 250000902.

209000052 is digitally balanced in base 2, base 3 and base 9, because in such bases 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 (36).

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

209000052 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 208999989 and 209000034.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10399 + ... + 22937.

Almost surely, 2^209000052 is an apocalyptic number.

It is an amenable number.

209000052 is an abundant number, since it is smaller than the sum of its proper divisors (320488908).

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

209000052 is a wasteful number, since it uses less digits than its factorization.

209000052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13012 (or 13007 counting only the distinct ones).

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

The square root of 209000052 is about 14456.8340932585. The cubic root of 209000052 is about 593.4472632573.

Adding to 209000052 its reverse (250000902), we get a palindrome (459000954).

The spelling of 209000052 in words is "two hundred nine million, fifty-two", and thus it is an aban number.