204404245 has 8 divisors (see below), whose sum is σ = 246531384. Its totient is φ = 162692544.

The previous prime is 204404219. The next prime is 204404251. The reversal of 204404245 is 542404402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73667889 + 130736356 = 8583^2 + 11434^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204404245 - 2¹⁵ = 204371477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102774 + ... + 104743.

It is an arithmetic number, because the mean of its divisors is an integer number (30816423).

Almost surely, 2^204404245 is an apocalyptic number.

It is an amenable number.

204404245 is a deficient number, since it is larger than the sum of its proper divisors (42127139).

204404245 is a wasteful number, since it uses less digits than its factorization.

204404245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207719.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 204404245 is about 14297.0012590053. The cubic root of 204404245 is about 589.0651142555.

Adding to 204404245 its reverse (542404402), we get a palindrome (746808647).

The spelling of 204404245 in words is "two hundred four million, four hundred four thousand, two hundred forty-five".