209275252 has 24 divisors (see below), whose sum is σ = 395337600. Its totient is φ = 96635616.

The previous prime is 209275207. The next prime is 209275259. The reversal of 209275252 is 252572902.

209275252 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×209275252² = 87592262199327008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209275259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36552 + ... + 41887.

It is an arithmetic number, because the mean of its divisors is an integer number (16472400).

Almost surely, 2^209275252 is an apocalyptic number.

It is an amenable number.

209275252 is a deficient number, since it is larger than the sum of its proper divisors (186062348).

209275252 is a wasteful number, since it uses less digits than its factorization.

209275252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78495 (or 78493 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 209275252 is about 14466.3489519643. The cubic root of 209275252 is about 593.7076221352.

The spelling of 209275252 in words is "two hundred nine million, two hundred seventy-five thousand, two hundred fifty-two".