204502901 has 2 divisors, whose sum is σ = 204502902. Its totient is φ = 204502900.

The previous prime is 204502891. The next prime is 204502943. The reversal of 204502901 is 109205402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166668100 + 37834801 = 12910^2 + 6151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204502901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204502951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102251450 + 102251451.

It is an arithmetic number, because the mean of its divisors is an integer number (102251451).

Almost surely, 2^204502901 is an apocalyptic number.

It is an amenable number.

204502901 is a deficient number, since it is larger than the sum of its proper divisors (1).

204502901 is an equidigital number, since it uses as much as digits as its factorization.

204502901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 204502901 is about 14300.4510768017. The cubic root of 204502901 is about 589.1598700513.

The spelling of 204502901 in words is "two hundred four million, five hundred two thousand, nine hundred one".