55548864 has 168 divisors, whose sum is σ = 190195200. Its totient is φ = 15155712.

The previous prime is 55548863. The next prime is 55548881. The reversal of 55548864 is 46884555.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55548863) 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, 92437 + ... + 93035.

Almost surely, 2^55548864 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 55548864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95097600).

55548864 is an abundant number, since it is smaller than the sum of its proper divisors (134646336).

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

55548864 is a wasteful number, since it uses less digits than its factorization.

55548864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 634 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 55548864 is about 7453.1110282888. Note that the first 3 decimals coincide. The cubic root of 55548864 is about 381.5560937314.

The spelling of 55548864 in words is "fifty-five million, five hundred forty-eight thousand, eight hundred sixty-four".