205115441 has 4 divisors (see below), whose sum is σ = 206612772. Its totient is φ = 203618112.

The previous prime is 205115423. The next prime is 205115501. The reversal of 205115441 is 144511502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144511502 = 2 ⋅72255751.

It can be written as a sum of positive squares in 2 ways, for example, as 141514816 + 63600625 = 11896^2 + 7975^2 .

It is a cyclic number.

It is not a de Polignac number, because 205115441 - 2¹⁴ = 205099057 is a prime.

It is a super-3 number, since 3×205115441³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205115401) 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, 748460 + ... + 748733.

It is an arithmetic number, because the mean of its divisors is an integer number (51653193).

Almost surely, 2^205115441 is an apocalyptic number.

It is an amenable number.

205115441 is a deficient number, since it is larger than the sum of its proper divisors (1497331).

205115441 is a wasteful number, since it uses less digits than its factorization.

205115441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497330.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 205115441 is about 14321.8518704810. The cubic root of 205115441 is about 589.7475133386.

Adding to 205115441 its reverse (144511502), we get a palindrome (349626943).

It can be divided in two parts, 20511 and 5441, that added together give a palindrome (25952).

The spelling of 205115441 in words is "two hundred five million, one hundred fifteen thousand, four hundred forty-one".