55443200 has 54 divisors (see below), whose sum is σ = 137246424. Its totient is φ = 22174720.

The previous prime is 55443169. The next prime is 55443209. The reversal of 55443200 is 234455.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55443209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2069 + ... + 10731.

Almost surely, 2^55443200 is an apocalyptic number.

55443200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55443200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68623212).

55443200 is an abundant number, since it is smaller than the sum of its proper divisors (81803224).

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

55443200 is an equidigital number, since it uses as much as digits as its factorization.

55443200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8689 (or 8670 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 55443200 is about 7446.0190706175. The cubic root of 55443200 is about 381.3140105727.

Adding to 55443200 its reverse (234455), we get a palindrome (55677655).

The spelling of 55443200 in words is "fifty-five million, four hundred forty-three thousand, two hundred".