243326655 has 48 divisors (see below), whose sum is σ = 495514656. Its totient is φ = 108898560.

The previous prime is 243326651. The next prime is 243326669. The reversal of 243326655 is 556623342.

It is not a de Polignac number, because 243326655 - 2² = 243326651 is a prime.

It is a super-2 number, since 2×243326655² = 118415722066978050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243326651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12472 + ... + 25341.

It is an arithmetic number, because the mean of its divisors is an integer number (10323222).

Almost surely, 2^243326655 is an apocalyptic number.

243326655 is an abundant number, since it is smaller than the sum of its proper divisors (252188001).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243326655 is a wasteful number, since it uses less digits than its factorization.

243326655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37848 (or 37845 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 243326655 is about 15598.9312133877. The cubic root of 243326655 is about 624.3046389103.

Adding to 243326655 its reverse (556623342), we get a palindrome (799949997).

The spelling of 243326655 in words is "two hundred forty-three million, three hundred twenty-six thousand, six hundred fifty-five".