55043520 has 112 divisors (see below), whose sum is σ = 199753728. Its totient is φ = 12579840.

The previous prime is 55043497. The next prime is 55043539. The reversal of 55043520 is 2534055.

55043520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2625 + ... + 10815.

Almost surely, 2^55043520 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 55043520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99876864).

55043520 is an abundant number, since it is smaller than the sum of its proper divisors (144710208).

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

55043520 is a wasteful number, since it uses less digits than its factorization.

55043520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8218 (or 8208 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 55043520 is about 7419.1320247048. The cubic root of 55043520 is about 380.3955253835.

Adding to 55043520 its reverse (2534055), we get a palindrome (57577575).

The spelling of 55043520 in words is "fifty-five million, forty-three thousand, five hundred twenty".