205201171 has 6 divisors (see below), whose sum is σ = 238703460. Its totient is φ = 175886676.

The previous prime is 205201163. The next prime is 205201177. The reversal of 205201171 is 171102502.

It is not a de Polignac number, because 205201171 - 2³ = 205201163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205201177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2093841 + ... + 2093938.

It is an arithmetic number, because the mean of its divisors is an integer number (39783910).

Almost surely, 2^205201171 is an apocalyptic number.

205201171 is a deficient number, since it is larger than the sum of its proper divisors (33502289).

205201171 is an equidigital number, since it uses as much as digits as its factorization.

205201171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187793 (or 4187786 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 205201171 is about 14324.8445366782. The cubic root of 205201171 is about 589.8296654701.

Adding to 205201171 its reverse (171102502), we get a palindrome (376303673).

The spelling of 205201171 in words is "two hundred five million, two hundred one thousand, one hundred seventy-one".