204534481 has 2 divisors, whose sum is σ = 204534482. Its totient is φ = 204534480.

The previous prime is 204534443. The next prime is 204534509. The reversal of 204534481 is 184435402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146531025 + 58003456 = 12105^2 + 7616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204534481 is a prime.

It is a super-2 number, since 2×204534481² = 83668707835878722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204534401) 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 as a sum of consecutive naturals, namely, 102267240 + 102267241.

It is an arithmetic number, because the mean of its divisors is an integer number (102267241).

Almost surely, 2^204534481 is an apocalyptic number.

It is an amenable number.

204534481 is a deficient number, since it is larger than the sum of its proper divisors (1).

204534481 is an equidigital number, since it uses as much as digits as its factorization.

204534481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 204534481 is about 14301.5551951527. Note that the first 3 decimals coincide. The cubic root of 204534481 is about 589.1901951485.

Adding to 204534481 its reverse (184435402), we get a palindrome (388969883).

The spelling of 204534481 in words is "two hundred four million, five hundred thirty-four thousand, four hundred eighty-one".