204536281 has 2 divisors, whose sum is σ = 204536282. Its totient is φ = 204536280.

The previous prime is 204536279. The next prime is 204536347. The reversal of 204536281 is 182635402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162817600 + 41718681 = 12760^2 + 6459^2 .

It is a cyclic number.

It is not a de Polignac number, because 204536281 - 2¹ = 204536279 is a prime.

It is a super-2 number, since 2×204536281² = 83670180490621922, which contains 22 as substring.

Together with 204536279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (204536221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102268140 + 102268141.

It is an arithmetic number, because the mean of its divisors is an integer number (102268141).

Almost surely, 2^204536281 is an apocalyptic number.

It is an amenable number.

204536281 is a deficient number, since it is larger than the sum of its proper divisors (1).

204536281 is an equidigital number, since it uses as much as digits as its factorization.

204536281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 204536281 is about 14301.6181252332. The cubic root of 204536281 is about 589.1919235274.

The spelling of 204536281 in words is "two hundred four million, five hundred thirty-six thousand, two hundred eighty-one".