243255806 has 4 divisors (see below), whose sum is σ = 364883712. Its totient is φ = 121627902.

The previous prime is 243255787. The next prime is 243255811. The reversal of 243255806 is 608552342.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60813950 + ... + 60813953.

It is an arithmetic number, because the mean of its divisors is an integer number (91220928).

Almost surely, 2^243255806 is an apocalyptic number.

243255806 is a deficient number, since it is larger than the sum of its proper divisors (121627906).

243255806 is a wasteful number, since it uses less digits than its factorization.

243255806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121627905.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 243255806 is about 15596.6600911862. The cubic root of 243255806 is about 624.2440404623.

The spelling of 243255806 in words is "two hundred forty-three million, two hundred fifty-five thousand, eight hundred six".