204520441 has 4 divisors (see below), whose sum is σ = 211572900. Its totient is φ = 197467984.

The previous prime is 204520429. The next prime is 204520451. The reversal of 204520441 is 144025402.

It is a happy number.

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 166513216 + 38007225 = 12904^2 + 6165^2 .

It is a cyclic number.

It is not a de Polignac number, because 204520441 - 2¹¹ = 204518393 is a prime.

It is a super-2 number, since 2×204520441² = 83657221573668962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204520451) 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, 3526186 + ... + 3526243.

It is an arithmetic number, because the mean of its divisors is an integer number (52893225).

Almost surely, 2^204520441 is an apocalyptic number.

It is an amenable number.

204520441 is a deficient number, since it is larger than the sum of its proper divisors (7052459).

204520441 is an equidigital number, since it uses as much as digits as its factorization.

204520441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7052458.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 204520441 is about 14301.0643310210. The cubic root of 204520441 is about 589.1767134451.

Adding to 204520441 its reverse (144025402), we get a palindrome (348545843).

The spelling of 204520441 in words is "two hundred four million, five hundred twenty thousand, four hundred forty-one".