55543000 has 64 divisors (see below), whose sum is σ = 132069600. Its totient is φ = 21859200.

The previous prime is 55542997. The next prime is 55543039. The reversal of 55543000 is 34555.

It is a happy number.

55543000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 10.

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, 66586 + ... + 67414.

Almost surely, 2^55543000 is an apocalyptic number.

55543000 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 55543000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66034800).

55543000 is an abundant number, since it is smaller than the sum of its proper divisors (76526600).

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

55543000 is a wasteful number, since it uses less digits than its factorization.

55543000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 55543000 is about 7452.7176251351. The cubic root of 55543000 is about 381.5426669722.

Adding to 55543000 its reverse (34555), we get a palindrome (55577555).

The spelling of 55543000 in words is "fifty-five million, five hundred forty-three thousand".