55443120 has 160 divisors (see below), whose sum is σ = 185131008. Its totient is φ = 13676544.

The previous prime is 55443109. The next prime is 55443151. The reversal of 55443120 is 2134455.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436497 + ... + 436623.

Almost surely, 2^55443120 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 55443120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92565504).

55443120 is an abundant number, since it is smaller than the sum of its proper divisors (129687888).

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

55443120 is a wasteful number, since it uses less digits than its factorization.

55443120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 55443120 is about 7446.0136986175. The cubic root of 55443120 is about 381.3138271710.

Adding to 55443120 its reverse (2134455), we get a palindrome (57577575).

The spelling of 55443120 in words is "fifty-five million, four hundred forty-three thousand, one hundred twenty".