55343220 has 48 divisors (see below), whose sum is σ = 155856960. Its totient is φ = 14672896.

The previous prime is 55343209. The next prime is 55343243. The reversal of 55343220 is 2234355.

55343220 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 15 ways as a sum of consecutive naturals, for example, 8164 + ... + 13316.

It is an arithmetic number, because the mean of its divisors is an integer number (3247020).

Almost surely, 2^55343220 is an apocalyptic number.

It is an amenable number.

55343220 is an abundant number, since it is smaller than the sum of its proper divisors (100513740).

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

55343220 is a wasteful number, since it uses less digits than its factorization.

55343220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5344 (or 5342 counting only the distinct ones).

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

The square root of 55343220 is about 7439.3023866489. The cubic root of 55343220 is about 381.0846664644.

Adding to 55343220 its reverse (2234355), we get a palindrome (57577575).

The spelling of 55343220 in words is "fifty-five million, three hundred forty-three thousand, two hundred twenty".