243885061 has 8 divisors (see below), whose sum is σ = 279923904. Its totient is φ = 208145760.

The previous prime is 243885053. The next prime is 243885067. The reversal of 243885061 is 160588342.

It is a happy number.

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 243885061 - 2³ = 243885053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243885061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243885067) by changing a digit.

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, 73135 + ... + 76396.

It is an arithmetic number, because the mean of its divisors is an integer number (34990488).

Almost surely, 2^243885061 is an apocalyptic number.

It is an amenable number.

243885061 is a deficient number, since it is larger than the sum of its proper divisors (36038843).

243885061 is a wasteful number, since it uses less digits than its factorization.

243885061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149771.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 243885061 is about 15616.8198107041. The cubic root of 243885061 is about 624.7818425806.

The spelling of 243885061 in words is "two hundred forty-three million, eight hundred eighty-five thousand, sixty-one".