243545105 has 8 divisors (see below), whose sum is σ = 292352064. Its totient is φ = 194770800.

The previous prime is 243545069. The next prime is 243545143. The reversal of 243545105 is 501545342.

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

It is not a de Polignac number, because 243545105 - 2⁶ = 243545041 is a prime.

It is a super-3 number, since 3×243545105³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13460 + ... + 25850.

It is an arithmetic number, because the mean of its divisors is an integer number (36544008).

Almost surely, 2^243545105 is an apocalyptic number.

It is an amenable number.

243545105 is a deficient number, since it is larger than the sum of its proper divisors (48806959).

243545105 is a wasteful number, since it uses less digits than its factorization.

243545105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16327.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 243545105 is about 15605.9317248282. The cubic root of 243545105 is about 624.4914091822.

The spelling of 243545105 in words is "two hundred forty-three million, five hundred forty-five thousand, one hundred five".