205135345 has 8 divisors (see below), whose sum is σ = 260642664. Its totient is φ = 154454784.

The previous prime is 205135313. The next prime is 205135351. The reversal of 205135345 is 543531502.

It can be written as a sum of positive squares in 4 ways, for example, as 79852096 + 125283249 = 8936^2 + 11193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205135345 - 2⁵ = 205135313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1206594 + ... + 1206763.

It is an arithmetic number, because the mean of its divisors is an integer number (32580333).

Almost surely, 2^205135345 is an apocalyptic number.

It is an amenable number.

205135345 is a deficient number, since it is larger than the sum of its proper divisors (55507319).

205135345 is a wasteful number, since it uses less digits than its factorization.

205135345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413379.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 205135345 is about 14322.5467358288. The cubic root of 205135345 is about 589.7665887021.

Adding to 205135345 its reverse (543531502), we get a palindrome (748666847).

The spelling of 205135345 in words is "two hundred five million, one hundred thirty-five thousand, three hundred forty-five".