205145441 has 8 divisors (see below), whose sum is σ = 214569600. Its totient is φ = 195763392.

The previous prime is 205145431. The next prime is 205145453. The reversal of 205145441 is 144541502.

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

It is a cyclic number.

It is not a de Polignac number, because 205145441 - 2¹⁰ = 205144417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205145441.

It is not an unprimeable number, because it can be changed into a prime (205145431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341 + ... + 20258.

It is an arithmetic number, because the mean of its divisors is an integer number (26821200).

Almost surely, 2^205145441 is an apocalyptic number.

It is an amenable number.

205145441 is a deficient number, since it is larger than the sum of its proper divisors (9424159).

205145441 is a wasteful number, since it uses less digits than its factorization.

205145441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21055.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 205145441 is about 14322.8991827772. The cubic root of 205145441 is about 589.7762639173.

Adding to 205145441 its reverse (144541502), we get a palindrome (349686943).

The spelling of 205145441 in words is "two hundred five million, one hundred forty-five thousand, four hundred forty-one".