243003055 has 4 divisors (see below), whose sum is σ = 291603672. Its totient is φ = 194402440.

The previous prime is 243003053. The next prime is 243003067. The reversal of 243003055 is 550300342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550300342 = 2 ⋅275150171.

It is not a de Polignac number, because 243003055 - 2¹ = 243003053 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 (243003053) 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, 24300301 + ... + 24300310.

It is an arithmetic number, because the mean of its divisors is an integer number (72900918).

Almost surely, 2^243003055 is an apocalyptic number.

243003055 is a deficient number, since it is larger than the sum of its proper divisors (48600617).

243003055 is an equidigital number, since it uses as much as digits as its factorization.

243003055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48600616.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 243003055 is about 15588.5552569826. Note that the first 3 decimals coincide. The cubic root of 243003055 is about 624.0277619894.

Adding to 243003055 its reverse (550300342), we get a palindrome (793303397).

The spelling of 243003055 in words is "two hundred forty-three million, three thousand, fifty-five".