243476155 has 16 divisors (see below), whose sum is σ = 317769984. Its totient is φ = 178012800.

The previous prime is 243476119. The next prime is 243476161. The reversal of 243476155 is 551674342.

It is not a de Polignac number, because 243476155 - 2²⁷ = 109258427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11979 + ... + 25108.

It is an arithmetic number, because the mean of its divisors is an integer number (19860624).

Almost surely, 2^243476155 is an apocalyptic number.

243476155 is a deficient number, since it is larger than the sum of its proper divisors (74293829).

243476155 is a wasteful number, since it uses less digits than its factorization.

243476155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37206.

The product of its digits is 100800, while the sum is 37.

The square root of 243476155 is about 15603.7224725384. The cubic root of 243476155 is about 624.4324704123.

The spelling of 243476155 in words is "two hundred forty-three million, four hundred seventy-six thousand, one hundred fifty-five".