55303120 has 20 divisors (see below), whose sum is σ = 128579940. Its totient is φ = 22121216.

The previous prime is 55303111. The next prime is 55303133. The reversal of 55303120 is 2130355.

It can be written as a sum of positive squares in 2 ways, for example, as 31449664 + 23853456 = 5608^2 + 4884^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345565 + ... + 345724.

It is an arithmetic number, because the mean of its divisors is an integer number (6428997).

Almost surely, 2^55303120 is an apocalyptic number.

It is an amenable number.

55303120 is an abundant number, since it is smaller than the sum of its proper divisors (73276820).

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

55303120 is a wasteful number, since it uses less digits than its factorization.

55303120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691302 (or 691296 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 55303120 is about 7436.6067530830. The cubic root of 55303120 is about 380.9926034712.

Adding to 55303120 its reverse (2130355), we get a palindrome (57433475).

The spelling of 55303120 in words is "fifty-five million, three hundred three thousand, one hundred twenty".