243422555 has 4 divisors (see below), whose sum is σ = 292107072. Its totient is φ = 194738040.

The previous prime is 243422533. The next prime is 243422573. The reversal of 243422555 is 555224342.

243422555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 243422555 - 2⁸ = 243422299 is a prime.

It is a Duffinian 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, 24342251 + ... + 24342260.

It is an arithmetic number, because the mean of its divisors is an integer number (73026768).

Almost surely, 2^243422555 is an apocalyptic number.

243422555 is a deficient number, since it is larger than the sum of its proper divisors (48684517).

243422555 is an equidigital number, since it uses as much as digits as its factorization.

243422555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48684516.

The product of its digits is 48000, while the sum is 32.

The square root of 243422555 is about 15602.0048391224. The cubic root of 243422555 is about 624.3866452037.

Adding to 243422555 its reverse (555224342), we get a palindrome (798646897).

The spelling of 243422555 in words is "two hundred forty-three million, four hundred twenty-two thousand, five hundred fifty-five".