55634544 has 120 divisors (see below), whose sum is σ = 180092640. Its totient is φ = 15704064.

The previous prime is 55634531. The next prime is 55634549. The reversal of 55634544 is 44543655.

55634544 is a `hidden beast` number, since 55 + 63 + 4 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55634499 and 55634508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55634549) 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, 97492 + ... + 98060.

It is an arithmetic number, because the mean of its divisors is an integer number (1500772).

Almost surely, 2^55634544 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 55634544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90046320).

55634544 is an abundant number, since it is smaller than the sum of its proper divisors (124458096).

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

55634544 is a wasteful number, since it uses less digits than its factorization.

55634544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 678 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 55634544 is about 7458.8567488590. The cubic root of 55634544 is about 381.7521669419.

The spelling of 55634544 in words is "fifty-five million, six hundred thirty-four thousand, five hundred forty-four".