204115171 has 8 divisors (see below), whose sum is σ = 220473344. Its totient is φ = 187850880.

The previous prime is 204115169. The next prime is 204115183. The reversal of 204115171 is 171511402.

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 204115171 - 2¹ = 204115169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204115111) 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, 18915 + ... + 27676.

It is an arithmetic number, because the mean of its divisors is an integer number (27559168).

Almost surely, 2^204115171 is an apocalyptic number.

204115171 is a deficient number, since it is larger than the sum of its proper divisors (16358173).

204115171 is a wasteful number, since it uses less digits than its factorization.

204115171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46941.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 204115171 is about 14286.8880796344. Note that the first 3 decimals coincide. The cubic root of 204115171 is about 588.7872926524.

Adding to 204115171 its reverse (171511402), we get a palindrome (375626573).

The spelling of 204115171 in words is "two hundred four million, one hundred fifteen thousand, one hundred seventy-one".