204045245 has 8 divisors (see below), whose sum is σ = 244950360. Its totient is φ = 163172160.

The previous prime is 204045211. The next prime is 204045263. The reversal of 204045245 is 542540402.

It can be written as a sum of positive squares in 4 ways, for example, as 9665881 + 194379364 = 3109^2 + 13942^2 .

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

It is not a de Polignac number, because 204045245 - 2⁶ = 204045181 is a prime.

It is a super-2 number, since 2×204045245² = 83268924014220050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9491 + ... + 22319.

It is an arithmetic number, because the mean of its divisors is an integer number (30618795).

Almost surely, 2^204045245 is an apocalyptic number.

It is an amenable number.

204045245 is a deficient number, since it is larger than the sum of its proper divisors (40905115).

204045245 is a wasteful number, since it uses less digits than its factorization.

204045245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16015.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 204045245 is about 14284.4406610830. The cubic root of 204045245 is about 588.7200491733.

Adding to 204045245 its reverse (542540402), we get a palindrome (746585647).

The spelling of 204045245 in words is "two hundred four million, forty-five thousand, two hundred forty-five".