55043340 has 48 divisors (see below), whose sum is σ = 168134400. Its totient is φ = 13343680.

The previous prime is 55043333. The next prime is 55043341. The reversal of 55043340 is 4334055.

It is a happy number.

55043340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55043340.

It is not an unprimeable number, because it can be changed into a prime (55043341) by changing a digit.

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, 41040 + ... + 42359.

It is an arithmetic number, because the mean of its divisors is an integer number (3502800).

Almost surely, 2^55043340 is an apocalyptic number.

It is an amenable number.

55043340 is an abundant number, since it is smaller than the sum of its proper divisors (113091060).

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

55043340 is a wasteful number, since it uses less digits than its factorization.

55043340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83422 (or 83420 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 55043340 is about 7419.1198938958. The cubic root of 55043340 is about 380.3951107342.

Adding to 55043340 its reverse (4334055), we get a palindrome (59377395).

The spelling of 55043340 in words is "fifty-five million, forty-three thousand, three hundred forty".