55931188 has 12 divisors (see below), whose sum is σ = 98011620. Its totient is φ = 27927872.

The previous prime is 55931171. The next prime is 55931191. The reversal of 55931188 is 88113955.

55931188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 26749584 + 29181604 = 5172^2 + 5402^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55931188.

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, 5953 + ... + 12136.

It is an arithmetic number, because the mean of its divisors is an integer number (8167635).

Almost surely, 2^55931188 is an apocalyptic number.

It is an amenable number.

55931188 is a deficient number, since it is larger than the sum of its proper divisors (42080432).

55931188 is a wasteful number, since it uses less digits than its factorization.

55931188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18866 (or 18864 counting only the distinct ones).

The product of its digits is 43200, while the sum is 40.

The square root of 55931188 is about 7478.7156651393. The cubic root of 55931188 is about 382.4294668241.

The spelling of 55931188 in words is "fifty-five million, nine hundred thirty-one thousand, one hundred eighty-eight".