205441045 has 4 divisors (see below), whose sum is σ = 246529260. Its totient is φ = 164352832.

The previous prime is 205441013. The next prime is 205441063. The reversal of 205441045 is 540144502.

It is a happy number.

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 104980516 + 100460529 = 10246^2 + 10023^2 .

It is a cyclic number.

It is not a de Polignac number, because 205441045 - 2⁵ = 205441013 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20544100 + ... + 20544109.

It is an arithmetic number, because the mean of its divisors is an integer number (61632315).

Almost surely, 2^205441045 is an apocalyptic number.

It is an amenable number.

205441045 is a deficient number, since it is larger than the sum of its proper divisors (41088215).

205441045 is an equidigital number, since it uses as much as digits as its factorization.

205441045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41088214.

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

The square root of 205441045 is about 14333.2147475715. The cubic root of 205441045 is about 590.0594070220.

Adding to 205441045 its reverse (540144502), we get a palindrome (745585547).

The spelling of 205441045 in words is "two hundred five million, four hundred forty-one thousand, forty-five".