55504384 has 80 divisors (see below), whose sum is σ = 123742080. Its totient is φ = 24698880.

The previous prime is 55504381. The next prime is 55504391. The reversal of 55504384 is 48340555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55504381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206202 + ... + 206470.

It is an arithmetic number, because the mean of its divisors is an integer number (1546776).

Almost surely, 2^55504384 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 55504384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61871040).

55504384 is an abundant number, since it is smaller than the sum of its proper divisors (68237696).

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

55504384 is a wasteful number, since it uses less digits than its factorization.

55504384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 55504384 is about 7450.1264418800. The cubic root of 55504384 is about 381.4542245795.

The spelling of 55504384 in words is "fifty-five million, five hundred four thousand, three hundred eighty-four".