205145044 has 18 divisors (see below), whose sum is σ = 388745070. Its totient is φ = 94682016.

The previous prime is 205145023. The next prime is 205145047. The reversal of 205145044 is 440541502.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 14152644 + 190992400 = 3762^2 + 13820^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205145047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151059 + ... + 152410.

Almost surely, 2^205145044 is an apocalyptic number.

It is an amenable number.

205145044 is a deficient number, since it is larger than the sum of its proper divisors (183600026).

205145044 is a wasteful number, since it uses less digits than its factorization.

205145044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303499 (or 303484 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 205145044 is about 14322.8853238445. The cubic root of 205145044 is about 589.7758834696.

Adding to 205145044 its reverse (440541502), we get a palindrome (645686546).

The spelling of 205145044 in words is "two hundred five million, one hundred forty-five thousand, forty-four".