204251 has 2 divisors, whose sum is σ = 204252. Its totient is φ = 204250.

The previous prime is 204233. The next prime is 204299. The reversal of 204251 is 152402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204251 - 2¹⁰ = 203227 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 204251.

It is not a weakly prime, because it can be changed into another prime (204151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102125 + 102126.

It is an arithmetic number, because the mean of its divisors is an integer number (102126).

2²⁰⁴²⁵¹ is an apocalyptic number.

204251 is a deficient number, since it is larger than the sum of its proper divisors (1).

204251 is an equidigital number, since it uses as much as digits as its factorization.

204251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 204251 is about 451.9413678786. The cubic root of 204251 is about 58.8917867066.

Adding to 204251 its reverse (152402), we get a palindrome (356653).

The spelling of 204251 in words is "two hundred four thousand, two hundred fifty-one".