55487688 has 32 divisors (see below), whose sum is σ = 139725600. Its totient is φ = 18361728.

The previous prime is 55487681. The next prime is 55487689. The reversal of 55487688 is 88678455.

55487688 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 55487688.

It is not an unprimeable number, because it can be changed into a prime (55487681) 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 7 ways as a sum of consecutive naturals, for example, 4981 + ... + 11652.

It is an arithmetic number, because the mean of its divisors is an integer number (4366425).

Almost surely, 2^55487688 is an apocalyptic number.

It is an amenable number.

55487688 is an abundant number, since it is smaller than the sum of its proper divisors (84237912).

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

55487688 is a wasteful number, since it uses less digits than its factorization.

55487688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16781 (or 16777 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 51.

The square root of 55487688 is about 7449.0058397077. The cubic root of 55487688 is about 381.4159729558.

The spelling of 55487688 in words is "fifty-five million, four hundred eighty-seven thousand, six hundred eighty-eight".