204424001 has 4 divisors (see below), whose sum is σ = 209949012. Its totient is φ = 198898992.

The previous prime is 204423979. The next prime is 204424007. The reversal of 204424001 is 100424402.

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 166281025 + 38142976 = 12895^2 + 6176^2 .

It is a cyclic number.

It is not a de Polignac number, because 204424001 - 2¹⁴ = 204407617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204424007) 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, 2762450 + ... + 2762523.

It is an arithmetic number, because the mean of its divisors is an integer number (52487253).

Almost surely, 2^204424001 is an apocalyptic number.

It is an amenable number.

204424001 is a deficient number, since it is larger than the sum of its proper divisors (5525011).

204424001 is an equidigital number, since it uses as much as digits as its factorization.

204424001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525010.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 204424001 is about 14297.6921564286. The cubic root of 204424001 is about 589.0840916753.

Adding to 204424001 its reverse (100424402), we get a palindrome (304848403).

The spelling of 204424001 in words is "two hundred four million, four hundred twenty-four thousand, one".