243445252 has 24 divisors (see below), whose sum is σ = 451160640. Its totient is φ = 114619680.

The previous prime is 243445217. The next prime is 243445261. The reversal of 243445252 is 252544342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3102 + ... + 22282.

It is an arithmetic number, because the mean of its divisors is an integer number (18798360).

Almost surely, 2^243445252 is an apocalyptic number.

It is an amenable number.

243445252 is a deficient number, since it is larger than the sum of its proper divisors (207715388).

243445252 is a wasteful number, since it uses less digits than its factorization.

243445252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19371 (or 19369 counting only the distinct ones).

The product of its digits is 38400, while the sum is 31.

The square root of 243445252 is about 15602.7321966379. The cubic root of 243445252 is about 624.4060507777.

Adding to 243445252 its reverse (252544342), we get a palindrome (495989594).

The spelling of 243445252 in words is "two hundred forty-three million, four hundred forty-five thousand, two hundred fifty-two".