204151 has 2 divisors, whose sum is σ = 204152. Its totient is φ = 204150.

The previous prime is 204143. The next prime is 204161. The reversal of 204151 is 151402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204151 - 2³ = 204143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102075 + 102076.

It is an arithmetic number, because the mean of its divisors is an integer number (102076).

2²⁰⁴¹⁵¹ is an apocalyptic number.

204151 is a deficient number, since it is larger than the sum of its proper divisors (1).

204151 is an equidigital number, since it uses as much as digits as its factorization.

204151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 204151 is about 451.8307205138. The cubic root of 204151 is about 58.8821741220.

Adding to 204151 its reverse (151402), we get a palindrome (355553).

The spelling of 204151 in words is "two hundred four thousand, one hundred fifty-one".