243252005 has 8 divisors (see below), whose sum is σ = 292073472. Its totient is φ = 194487568.

The previous prime is 243251993. The next prime is 243252011. The reversal of 243252005 is 500252342.

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

It is a cyclic number.

It is not a de Polignac number, because 243252005 - 2¹² = 243247909 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 4229 + ... + 22458.

It is an arithmetic number, because the mean of its divisors is an integer number (36509184).

Almost surely, 2^243252005 is an apocalyptic number.

It is an amenable number.

243252005 is a deficient number, since it is larger than the sum of its proper divisors (48821467).

243252005 is a wasteful number, since it uses less digits than its factorization.

243252005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28515.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 243252005 is about 15596.5382376988. The cubic root of 243252005 is about 624.2407890648.

The spelling of 243252005 in words is "two hundred forty-three million, two hundred fifty-two thousand, five".