205251713 has 8 divisors (see below), whose sum is σ = 212050176. Its totient is φ = 198464400.

The previous prime is 205251707. The next prime is 205251721. The reversal of 205251713 is 317152502.

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 205251713 - 2²⁰ = 204203137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205251113) 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 7 ways as a sum of consecutive naturals, for example, 52070 + ... + 55872.

It is an arithmetic number, because the mean of its divisors is an integer number (26506272).

Almost surely, 2^205251713 is an apocalyptic number.

It is an amenable number.

205251713 is a deficient number, since it is larger than the sum of its proper divisors (6798463).

205251713 is a wasteful number, since it uses less digits than its factorization.

205251713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 205251713 is about 14326.6085658819. The cubic root of 205251713 is about 589.8780874221.

The spelling of 205251713 in words is "two hundred five million, two hundred fifty-one thousand, seven hundred thirteen".