204565141 has 6 divisors (see below), whose sum is σ = 224852726. Its totient is φ = 185968200.

The previous prime is 204565121. The next prime is 204565157. The reversal of 204565141 is 141565402.

It can be written as a sum of positive squares in only one way, i.e., 142706916 + 61858225 = 11946^2 + 7865^2 .

It is a de Polignac number, because none of the positive numbers 2^k-204565141 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 (204565121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 845190 + ... + 845431.

Almost surely, 2^204565141 is an apocalyptic number.

It is an amenable number.

204565141 is a deficient number, since it is larger than the sum of its proper divisors (20287585).

204565141 is a wasteful number, since it uses less digits than its factorization.

204565141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690643 (or 1690632 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 204565141 is about 14302.6270663819. The cubic root of 204565141 is about 589.2196338178.

The spelling of 204565141 in words is "two hundred four million, five hundred sixty-five thousand, one hundred forty-one".