243558055 has 48 divisors (see below), whose sum is σ = 343193760. Its totient is φ = 164436480.

The previous prime is 243558011. The next prime is 243558083. The reversal of 243558055 is 550855342.

It is a happy number.

243558055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243558055 - 2⁷ = 243557927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3992725 + ... + 3992785.

It is an arithmetic number, because the mean of its divisors is an integer number (7149870).

Almost surely, 2^243558055 is an apocalyptic number.

243558055 is a deficient number, since it is larger than the sum of its proper divisors (99635705).

243558055 is a wasteful number, since it uses less digits than its factorization.

243558055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The square root of 243558055 is about 15606.3466256520. The cubic root of 243558055 is about 624.5024776595.

The spelling of 243558055 in words is "two hundred forty-three million, five hundred fifty-eight thousand, fifty-five".