205513350 has 72 divisors (see below), whose sum is σ = 592906248. Its totient is φ = 46972800.

The previous prime is 205513313. The next prime is 205513351. The reversal of 205513350 is 53315502.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 205513350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205513351) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6631 + ... + 21330.

It is an arithmetic number, because the mean of its divisors is an integer number (8234809).

Almost surely, 2^205513350 is an apocalyptic number.

205513350 is an abundant number, since it is smaller than the sum of its proper divisors (387392898).

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

205513350 is a wasteful number, since it uses less digits than its factorization.

205513350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27990 (or 27978 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 205513350 is about 14335.7368139904. The cubic root of 205513350 is about 590.1286227285.

Adding to 205513350 its reverse (53315502), we get a palindrome (258828852).

The spelling of 205513350 in words is "two hundred five million, five hundred thirteen thousand, three hundred fifty".