55343320 has 16 divisors (see below), whose sum is σ = 124522560. Its totient is φ = 22137312.

The previous prime is 55343311. The next prime is 55343369. The reversal of 55343320 is 2334355.

It is a happy number.

55343320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 691752 + ... + 691831.

It is an arithmetic number, because the mean of its divisors is an integer number (7782660).

Almost surely, 2^55343320 is an apocalyptic number.

It is an amenable number.

55343320 is an abundant number, since it is smaller than the sum of its proper divisors (69179240).

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

55343320 is a wasteful number, since it uses less digits than its factorization.

55343320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383594 (or 1383590 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 55343320 is about 7439.3091077062. The cubic root of 55343320 is about 381.0848959923.

Adding to 55343320 its reverse (2334355), we get a palindrome (57677675).

The spelling of 55343320 in words is "fifty-five million, three hundred forty-three thousand, three hundred twenty".