55563984 has 120 divisors (see below), whose sum is σ = 179254400. Its totient is φ = 15738624.

The previous prime is 55563983. The next prime is 55564031. The reversal of 55563984 is 48936555.

55563984 is a `hidden beast` number, since 5 + 5 + 5 + 639 + 8 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55563983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200454 + ... + 200730.

Almost surely, 2^55563984 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 55563984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89627200).

55563984 is an abundant number, since it is smaller than the sum of its proper divisors (123690416).

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

55563984 is a wasteful number, since it uses less digits than its factorization.

55563984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 488 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 55563984 is about 7454.1253007982. The cubic root of 55563984 is about 381.5907095295.

The spelling of 55563984 in words is "fifty-five million, five hundred sixty-three thousand, nine hundred eighty-four".