243000054 has 64 divisors (see below), whose sum is σ = 591425280. Its totient is φ = 73344960.

The previous prime is 243000029. The next prime is 243000067. The reversal of 243000054 is 450000342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 31 ways as a sum of consecutive naturals, for example, 185269 + ... + 186575.

It is an arithmetic number, because the mean of its divisors is an integer number (9241020).

Almost surely, 2^243000054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243000054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295712640).

243000054 is an abundant number, since it is smaller than the sum of its proper divisors (348425226).

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

243000054 is a wasteful number, since it uses less digits than its factorization.

243000054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 243000054 is about 15588.4590001706. The cubic root of 243000054 is about 624.0251931397.

Adding to 243000054 its reverse (450000342), we get a palindrome (693000396).

The spelling of 243000054 in words is "two hundred forty-three million, fifty-four", and thus it is an aban number.