243244255 has 4 divisors (see below), whose sum is σ = 291893112. Its totient is φ = 194595400.

The previous prime is 243244247. The next prime is 243244307. The reversal of 243244255 is 552442342.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 243244255 - 2³ = 243244247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24324421 + ... + 24324430.

It is an arithmetic number, because the mean of its divisors is an integer number (72973278).

Almost surely, 2^243244255 is an apocalyptic number.

243244255 is a deficient number, since it is larger than the sum of its proper divisors (48648857).

243244255 is an equidigital number, since it uses as much as digits as its factorization.

243244255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48648856.

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

The square root of 243244255 is about 15596.2897831504. The cubic root of 243244255 is about 624.2341595648.

Adding to 243244255 its reverse (552442342), we get a palindrome (795686597).

The spelling of 243244255 in words is "two hundred forty-three million, two hundred forty-four thousand, two hundred fifty-five".