205251241 has 16 divisors (see below), whose sum is σ = 238613760. Its totient is φ = 174968640.

The previous prime is 205251239. The next prime is 205251259. The reversal of 205251241 is 142152502.

It is a cyclic number.

It is not a de Polignac number, because 205251241 - 2¹ = 205251239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205251041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3165 + ... + 20506.

It is an arithmetic number, because the mean of its divisors is an integer number (14913360).

Almost surely, 2^205251241 is an apocalyptic number.

It is an amenable number.

205251241 is a deficient number, since it is larger than the sum of its proper divisors (33362519).

205251241 is a wasteful number, since it uses less digits than its factorization.

205251241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23736.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 205251241 is about 14326.5920930276. The cubic root of 205251241 is about 589.8776352575.

The spelling of 205251241 in words is "two hundred five million, two hundred fifty-one thousand, two hundred forty-one".