205045413 has 4 divisors (see below), whose sum is σ = 273393888. Its totient is φ = 136696940.

The previous prime is 205045403. The next prime is 205045417. The reversal of 205045413 is 314540502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205045413 - 2¹⁶ = 204979877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205045417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34174233 + ... + 34174238.

It is an arithmetic number, because the mean of its divisors is an integer number (68348472).

Almost surely, 2^205045413 is an apocalyptic number.

It is an amenable number.

205045413 is a deficient number, since it is larger than the sum of its proper divisors (68348475).

205045413 is an equidigital number, since it uses as much as digits as its factorization.

205045413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68348474.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 205045413 is about 14319.4068662078. The cubic root of 205045413 is about 589.6803909099.

Adding to 205045413 its reverse (314540502), we get a palindrome (519585915).

The spelling of 205045413 in words is "two hundred five million, forty-five thousand, four hundred thirteen".