243355255 has 32 divisors (see below), whose sum is σ = 363279168. Its totient is φ = 153753600.

The previous prime is 243355247. The next prime is 243355283. The reversal of 243355255 is 552553342.

It is not a de Polignac number, because 243355255 - 2³ = 243355247 is a prime.

It is a super-2 number, since 2×243355255² = 118443560272230050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243355255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2145 + ... + 22165.

It is an arithmetic number, because the mean of its divisors is an integer number (11352474).

Almost surely, 2^243355255 is an apocalyptic number.

243355255 is a deficient number, since it is larger than the sum of its proper divisors (119923913).

243355255 is a wasteful number, since it uses less digits than its factorization.

243355255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20067.

The product of its digits is 90000, while the sum is 34.

The square root of 243355255 is about 15599.8479159253. The cubic root of 243355255 is about 624.3290976818.

The spelling of 243355255 in words is "two hundred forty-three million, three hundred fifty-five thousand, two hundred fifty-five".