55243984 has 40 divisors (see below), whose sum is σ = 111484928. Its totient is φ = 26490240.

The previous prime is 55243961. The next prime is 55244023. The reversal of 55243984 is 48934255.

55243984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62554 + ... + 63430.

Almost surely, 2^55243984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55243984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55742464).

55243984 is an abundant number, since it is smaller than the sum of its proper divisors (56240944).

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

55243984 is a wasteful number, since it uses less digits than its factorization.

55243984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1037 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 55243984 is about 7432.6296826897. The cubic root of 55243984 is about 380.8567557168.

The spelling of 55243984 in words is "fifty-five million, two hundred forty-three thousand, nine hundred eighty-four".