204534545 has 8 divisors (see below), whose sum is σ = 246227496. Its totient is φ = 163103616.

The previous prime is 204534541. The next prime is 204534569. The reversal of 204534545 is 545435402.

It can be written as a sum of positive squares in 4 ways, for example, as 4227136 + 200307409 = 2056^2 + 14153^2 .

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 204534545 - 2² = 204534541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204534541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63782 + ... + 66911.

It is an arithmetic number, because the mean of its divisors is an integer number (30778437).

Almost surely, 2^204534545 is an apocalyptic number.

It is an amenable number.

204534545 is a deficient number, since it is larger than the sum of its proper divisors (41692951).

204534545 is a wasteful number, since it uses less digits than its factorization.

204534545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131011.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 204534545 is about 14301.5574326715. The cubic root of 204534545 is about 589.1902566021.

Adding to 204534545 its reverse (545435402), we get a palindrome (749969947).

The spelling of 204534545 in words is "two hundred four million, five hundred thirty-four thousand, five hundred forty-five".