243752085 has 32 divisors (see below), whose sum is σ = 438706560. Its totient is φ = 129995280.

The previous prime is 243752071. The next prime is 243752107. The reversal of 243752085 is 580257342.

243752085 is a `hidden beast` number, since 24 + 37 + 520 + 85 = 666.

It is not a de Polignac number, because 243752085 - 2⁶ = 243752021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211 + ... + 22080.

It is an arithmetic number, because the mean of its divisors is an integer number (13709580).

Almost surely, 2^243752085 is an apocalyptic number.

It is an amenable number.

243752085 is a deficient number, since it is larger than the sum of its proper divisors (194954475).

243752085 is an frugal number, since it uses more digits than its factorization.

243752085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22317 (or 22299 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 243752085 is about 15612.5617692933. The cubic root of 243752085 is about 624.6682698260.

The spelling of 243752085 in words is "two hundred forty-three million, seven hundred fifty-two thousand, eighty-five".