206504253 has 12 divisors (see below), whose sum is σ = 315830268. Its totient is φ = 129571200.

The previous prime is 206504239. The next prime is 206504257. The reversal of 206504253 is 352405602.

206504253 is a `hidden beast` number, since 2 + 0 + 650 + 4 + 2 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 113998329 + 92505924 = 10677^2 + 9618^2 .

It is not a de Polignac number, because 206504253 - 2¹⁸ = 206242109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206504257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674698 + ... + 675003.

It is an arithmetic number, because the mean of its divisors is an integer number (26319189).

Almost surely, 2^206504253 is an apocalyptic number.

It is an amenable number.

206504253 is a deficient number, since it is larger than the sum of its proper divisors (109326015).

206504253 is a wasteful number, since it uses less digits than its factorization.

206504253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349724 (or 1349721 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 206504253 is about 14370.2558432340. The cubic root of 206504253 is about 591.0755570040.

Adding to 206504253 its reverse (352405602), we get a palindrome (558909855).

The spelling of 206504253 in words is "two hundred six million, five hundred four thousand, two hundred fifty-three".