243552445 has 4 divisors (see below), whose sum is σ = 292262940. Its totient is φ = 194841952.

The previous prime is 243552427. The next prime is 243552457. The reversal of 243552445 is 544255342.

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

It can be written as a sum of positive squares in 2 ways, for example, as 164378041 + 79174404 = 12821^2 + 8898^2 .

It is a cyclic number.

It is not a de Polignac number, because 243552445 - 2¹³ = 243544253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243552445.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 24355240 + ... + 24355249.

It is an arithmetic number, because the mean of its divisors is an integer number (73065735).

Almost surely, 2^243552445 is an apocalyptic number.

It is an amenable number.

243552445 is a deficient number, since it is larger than the sum of its proper divisors (48710495).

243552445 is an equidigital number, since it uses as much as digits as its factorization.

243552445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48710494.

The product of its digits is 96000, while the sum is 34.

The square root of 243552445 is about 15606.1668900470. The cubic root of 243552445 is about 624.4976827920.

The spelling of 243552445 in words is "two hundred forty-three million, five hundred fifty-two thousand, four hundred forty-five".