243589055 has 4 divisors (see below), whose sum is σ = 292306872. Its totient is φ = 194871240.

The previous prime is 243589051. The next prime is 243589057. The reversal of 243589055 is 550985342.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 243589055 - 2² = 243589051 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 (243589051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24358901 + ... + 24358910.

It is an arithmetic number, because the mean of its divisors is an integer number (73076718).

Almost surely, 2^243589055 is an apocalyptic number.

243589055 is a deficient number, since it is larger than the sum of its proper divisors (48717817).

243589055 is an equidigital number, since it uses as much as digits as its factorization.

243589055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48717816.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 243589055 is about 15607.3397797318. The cubic root of 243589055 is about 624.5289720348.

The spelling of 243589055 in words is "two hundred forty-three million, five hundred eighty-nine thousand, fifty-five".