243283155 has 8 divisors (see below), whose sum is σ = 389253072. Its totient is φ = 129751008.

The previous prime is 243283129. The next prime is 243283223. The reversal of 243283155 is 551382342.

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

It is not a de Polignac number, because 243283155 - 2⁸ = 243282899 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, 8109424 + ... + 8109453.

It is an arithmetic number, because the mean of its divisors is an integer number (48656634).

Almost surely, 2^243283155 is an apocalyptic number.

243283155 is a deficient number, since it is larger than the sum of its proper divisors (145969917).

243283155 is a wasteful number, since it uses less digits than its factorization.

243283155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16218885.

The product of its digits is 28800, while the sum is 33.

The square root of 243283155 is about 15597.5368247682. The cubic root of 243283155 is about 624.2674339573.

The spelling of 243283155 in words is "two hundred forty-three million, two hundred eighty-three thousand, one hundred fifty-five".