243270155 has 8 divisors (see below), whose sum is σ = 294025200. Its totient is φ = 193215456.

The previous prime is 243270127. The next prime is 243270163. The reversal of 243270155 is 551072342.

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-243270155 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174320 + ... + 175709.

It is an arithmetic number, because the mean of its divisors is an integer number (36753150).

Almost surely, 2^243270155 is an apocalyptic number.

243270155 is a deficient number, since it is larger than the sum of its proper divisors (50755045).

243270155 is a wasteful number, since it uses less digits than its factorization.

243270155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350173.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 243270155 is about 15597.1200867340. The cubic root of 243270155 is about 624.2563143750.

The spelling of 243270155 in words is "two hundred forty-three million, two hundred seventy thousand, one hundred fifty-five".