243055255 has 8 divisors (see below), whose sum is σ = 292120992. Its totient is φ = 194141088.

The previous prime is 243055243. The next prime is 243055259. The reversal of 243055255 is 552550342.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243055255 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 (243055259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34332 + ... + 40801.

It is an arithmetic number, because the mean of its divisors is an integer number (36515124).

Almost surely, 2^243055255 is an apocalyptic number.

243055255 is a deficient number, since it is larger than the sum of its proper divisors (49065737).

243055255 is an equidigital number, since it uses as much as digits as its factorization.

243055255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75785.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 243055255 is about 15590.2294723330. The cubic root of 243055255 is about 624.0724416979.

The spelling of 243055255 in words is "two hundred forty-three million, fifty-five thousand, two hundred fifty-five".