243975254 has 4 divisors (see below), whose sum is σ = 365962884. Its totient is φ = 121987626.

The previous prime is 243975253. The next prime is 243975269. The reversal of 243975254 is 452579342.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243975253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60993812 + ... + 60993815.

It is an arithmetic number, because the mean of its divisors is an integer number (91490721).

Almost surely, 2^243975254 is an apocalyptic number.

243975254 is a deficient number, since it is larger than the sum of its proper divisors (121987630).

243975254 is a wasteful number, since it uses less digits than its factorization.

243975254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121987629.

The product of its digits is 302400, while the sum is 41.

The square root of 243975254 is about 15619.7072315713. The cubic root of 243975254 is about 624.8588515391.

The spelling of 243975254 in words is "two hundred forty-three million, nine hundred seventy-five thousand, two hundred fifty-four".