205440201 has 12 divisors (see below), whose sum is σ = 298287028. Its totient is φ = 136249344.

The previous prime is 205440187. The next prime is 205440203. The reversal of 205440201 is 102044502.

205440201 is a `hidden beast` number, since 20 + 5 + 440 + 201 = 666.

205440201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 62015625 + 143424576 = 7875^2 + 11976^2 .

It is not a de Polignac number, because 205440201 - 2¹⁰ = 205439177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205440203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57400 + ... + 60873.

Almost surely, 2^205440201 is an apocalyptic number.

It is an amenable number.

205440201 is a deficient number, since it is larger than the sum of its proper divisors (92846827).

205440201 is a wasteful number, since it uses less digits than its factorization.

205440201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118472 (or 118469 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 205440201 is about 14333.1853054372. The cubic root of 205440201 is about 590.0585989868.

Adding to 205440201 its reverse (102044502), we get a palindrome (307484703).

The spelling of 205440201 in words is "two hundred five million, four hundred forty thousand, two hundred one".