204564271 has 2 divisors, whose sum is σ = 204564272. Its totient is φ = 204564270.

The previous prime is 204564263. The next prime is 204564307. The reversal of 204564271 is 172465402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204564271 - 2³ = 204564263 is a prime.

It is a super-2 number, since 2×204564271² = 83693081939522882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204564251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102282135 + 102282136.

It is an arithmetic number, because the mean of its divisors is an integer number (102282136).

Almost surely, 2^204564271 is an apocalyptic number.

204564271 is a deficient number, since it is larger than the sum of its proper divisors (1).

204564271 is an equidigital number, since it uses as much as digits as its factorization.

204564271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 204564271 is about 14302.5966523565. The cubic root of 204564271 is about 589.2187985145.

The spelling of 204564271 in words is "two hundred four million, five hundred sixty-four thousand, two hundred seventy-one".