204003161 has 2 divisors, whose sum is σ = 204003162. Its totient is φ = 204003160.

The previous prime is 204003143. The next prime is 204003181. The reversal of 204003161 is 161300402.

204003161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121992025 + 82011136 = 11045^2 + 9056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204003161 is a prime.

It is not a weakly prime, because it can be changed into another prime (204003101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102001580 + 102001581.

It is an arithmetic number, because the mean of its divisors is an integer number (102001581).

Almost surely, 2^204003161 is an apocalyptic number.

It is an amenable number.

204003161 is a deficient number, since it is larger than the sum of its proper divisors (1).

204003161 is an equidigital number, since it uses as much as digits as its factorization.

204003161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 204003161 is about 14282.9675137907. The cubic root of 204003161 is about 588.6795722062.

Adding to 204003161 its reverse (161300402), we get a palindrome (365303563).

The spelling of 204003161 in words is "two hundred four million, three thousand, one hundred sixty-one".