204461 has 2 divisors, whose sum is σ = 204462. Its totient is φ = 204460.

The previous prime is 204443. The next prime is 204481. The reversal of 204461 is 164402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175561 + 28900 = 419^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 204461 - 2⁶ = 204397 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is equal to p₁₈₃₄₁ and since 204461 and 18341 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102230 + 102231.

It is an arithmetic number, because the mean of its divisors is an integer number (102231).

2²⁰⁴⁴⁶¹ is an apocalyptic number.

It is an amenable number.

204461 is a deficient number, since it is larger than the sum of its proper divisors (1).

204461 is an equidigital number, since it uses as much as digits as its factorization.

204461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 204461 is about 452.1736392140. The cubic root of 204461 is about 58.9119629263.

Adding to 204461 its reverse (164402), we get a palindrome (368863).

The spelling of 204461 in words is "two hundred four thousand, four hundred sixty-one".