204481 has 2 divisors, whose sum is σ = 204482. Its totient is φ = 204480.

The previous prime is 204461. The next prime is 204487. The reversal of 204481 is 184402.

204481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194481 + 10000 = 441^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 204481 - 2⁷ = 204353 is a prime.

It is a super-2 number, since 2×204481² = 83624958722, which contains 22 as substring.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 204481 parts by 639 straight cuts.

204481 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (204487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102240 + 102241.

It is an arithmetic number, because the mean of its divisors is an integer number (102241).

2²⁰⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

204481 is a deficient number, since it is larger than the sum of its proper divisors (1).

204481 is an equidigital number, since it uses as much as digits as its factorization.

204481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 204481 is about 452.1957540712. The cubic root of 204481 is about 58.9138837504.

Adding to 204481 its reverse (184402), we get a palindrome (388883).

It can be divided in two parts, 20448 and 1, that added together give a square (20449 = 143²).

The spelling of 204481 in words is "two hundred four thousand, four hundred eighty-one".