55543230 has 24 divisors (see below), whose sum is σ = 144412632. Its totient is φ = 14811504.

The previous prime is 55543219. The next prime is 55543231. The reversal of 55543230 is 3234555.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55543194 and 55543203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55543231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308484 + ... + 308663.

It is an arithmetic number, because the mean of its divisors is an integer number (6017193).

Almost surely, 2^55543230 is an apocalyptic number.

55543230 is an abundant number, since it is smaller than the sum of its proper divisors (88869402).

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

55543230 is a wasteful number, since it uses less digits than its factorization.

55543230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617160 (or 617157 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 55543230 is about 7452.7330557320. The cubic root of 55543230 is about 381.5431936194.

Adding to 55543230 its reverse (3234555), we get a palindrome (58777785).

The spelling of 55543230 in words is "fifty-five million, five hundred forty-three thousand, two hundred thirty".