243442255 has 16 divisors (see below), whose sum is σ = 334209024. Its totient is φ = 166759200.

The previous prime is 243442249. The next prime is 243442259. The reversal of 243442255 is 552244342.

It is not a de Polignac number, because 243442255 - 2⁵ = 243442223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243442259) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 37264 + ... + 43306.

It is an arithmetic number, because the mean of its divisors is an integer number (20888064).

Almost surely, 2^243442255 is an apocalyptic number.

243442255 is a deficient number, since it is larger than the sum of its proper divisors (90766769).

243442255 is a wasteful number, since it uses less digits than its factorization.

243442255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206.

The product of its digits is 38400, while the sum is 31.

The square root of 243442255 is about 15602.6361554707. The cubic root of 243442255 is about 624.4034884595.

Adding to 243442255 its reverse (552244342), we get a palindrome (795686597).

The spelling of 243442255 in words is "two hundred forty-three million, four hundred forty-two thousand, two hundred fifty-five".