204901 has 6 divisors (see below), whose sum is σ = 217970. Its totient is φ = 192576.

The previous prime is 204887. The next prime is 204913. The reversal of 204901 is 109402.

It can be written as a sum of positive squares in 3 ways, for example, as 44100 + 160801 = 210^2 + 401^2 .

It is not a de Polignac number, because 204901 - 2¹³ = 196709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66 + ... + 643.

2²⁰⁴⁹⁰¹ is an apocalyptic number.

It is an amenable number.

204901 is a deficient number, since it is larger than the sum of its proper divisors (13069).

204901 is an equidigital number, since it uses as much as digits as its factorization.

204901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 204901 is about 452.6599164936. The cubic root of 204901 is about 58.9541921561.

The spelling of 204901 in words is "two hundred four thousand, nine hundred one".