55049328 has 80 divisors (see below), whose sum is σ = 160679200. Its totient is φ = 18040320.

The previous prime is 55049321. The next prime is 55049339. The reversal of 55049328 is 82394055.

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 = 55049292 and 55049301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55049321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25308 + ... + 27396.

It is an arithmetic number, because the mean of its divisors is an integer number (2008490).

Almost surely, 2^55049328 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 55049328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80339600).

55049328 is an abundant number, since it is smaller than the sum of its proper divisors (105629872).

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

55049328 is a wasteful number, since it uses less digits than its factorization.

55049328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 55049328 is about 7419.5234348306. The cubic root of 55049328 is about 380.4089042488.

The spelling of 55049328 in words is "fifty-five million, forty-nine thousand, three hundred twenty-eight".