243255503 has 8 divisors (see below), whose sum is σ = 249025728. Its totient is φ = 237510144.

The previous prime is 243255497. The next prime is 243255511. The reversal of 243255503 is 305552342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243255503 - 2⁸ = 243255247 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 (243255563) 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 7 ways as a sum of consecutive naturals, for example, 14375 + ... + 26327.

It is an arithmetic number, because the mean of its divisors is an integer number (31128216).

Almost surely, 2^243255503 is an apocalyptic number.

243255503 is a deficient number, since it is larger than the sum of its proper divisors (5770225).

243255503 is a wasteful number, since it uses less digits than its factorization.

243255503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12433.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 243255503 is about 15596.6503775650. The cubic root of 243255503 is about 624.2437812755.

The spelling of 243255503 in words is "two hundred forty-three million, two hundred fifty-five thousand, five hundred three".