205424441 has 4 divisors (see below), whose sum is σ = 205742592. Its totient is φ = 205106292.

The previous prime is 205424437. The next prime is 205424491. The reversal of 205424441 is 144424502.

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 205424441 - 2² = 205424437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 205424441.

It is not an unprimeable number, because it can be changed into a prime (205424491) 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, 158105 + ... + 159398.

It is an arithmetic number, because the mean of its divisors is an integer number (51435648).

Almost surely, 2^205424441 is an apocalyptic number.

It is an amenable number.

205424441 is a deficient number, since it is larger than the sum of its proper divisors (318151).

205424441 is an equidigital number, since it uses as much as digits as its factorization.

205424441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318150.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 205424441 is about 14332.6355217734. The cubic root of 205424441 is about 590.0435101495.

Adding to 205424441 its reverse (144424502), we get a palindrome (349848943).

The spelling of 205424441 in words is "two hundred five million, four hundred twenty-four thousand, four hundred forty-one".