204016261 has 4 divisors (see below), whose sum is σ = 209530252. Its totient is φ = 198502272.

The previous prime is 204016249. The next prime is 204016271. The reversal of 204016261 is 162610402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 166255236 + 37761025 = 12894^2 + 6145^2 .

It is a cyclic number.

It is not a de Polignac number, because 204016261 - 2¹⁷ = 203885189 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 (204016271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2756940 + ... + 2757013.

It is an arithmetic number, because the mean of its divisors is an integer number (52382563).

Almost surely, 2^204016261 is an apocalyptic number.

It is an amenable number.

204016261 is a deficient number, since it is larger than the sum of its proper divisors (5513991).

204016261 is an equidigital number, since it uses as much as digits as its factorization.

204016261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513990.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 204016261 is about 14283.4260946035. The cubic root of 204016261 is about 588.6921725621.

Adding to 204016261 its reverse (162610402), we get a palindrome (366626663).

It can be divided in two parts, 20401 and 6261, that added together give a palindrome (26662).

The spelling of 204016261 in words is "two hundred four million, sixteen thousand, two hundred sixty-one".