243792155 has 16 divisors (see below), whose sum is σ = 316967904. Its totient is φ = 179289600.

The previous prime is 243792151. The next prime is 243792181. The reversal of 243792155 is 551297342.

It is not a de Polignac number, because 243792155 - 2² = 243792151 is a prime.

It is a super-2 number, since 2×243792155² = 118869229679088050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243792151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29696 + ... + 37005.

It is an arithmetic number, because the mean of its divisors is an integer number (19810494).

Almost surely, 2^243792155 is an apocalyptic number.

243792155 is a deficient number, since it is larger than the sum of its proper divisors (73175749).

243792155 is a wasteful number, since it uses less digits than its factorization.

243792155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66766.

The product of its digits is 75600, while the sum is 38.

The square root of 243792155 is about 15613.8449780956. The cubic root of 243792155 is about 624.7024973433.

The spelling of 243792155 in words is "two hundred forty-three million, seven hundred ninety-two thousand, one hundred fifty-five".