243251875 has 40 divisors (see below), whose sum is σ = 318860432. Its totient is φ = 185328000.

The previous prime is 243251839. The next prime is 243251959. The reversal of 243251875 is 578152342.

It is not a de Polignac number, because 243251875 - 2⁹ = 243251363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 1549297 + ... + 1549453.

Almost surely, 2^243251875 is an apocalyptic number.

243251875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

243251875 is a deficient number, since it is larger than the sum of its proper divisors (75608557).

243251875 is an equidigital number, since it uses as much as digits as its factorization.

243251875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 266 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

The square root of 243251875 is about 15596.5340701067. The cubic root of 243251875 is about 624.2406778614.

The spelling of 243251875 in words is "two hundred forty-three million, two hundred fifty-one thousand, eight hundred seventy-five".