55587688 has 64 divisors (see below), whose sum is σ = 124104960. Its totient is φ = 23079936.

The previous prime is 55587683. The next prime is 55587703. The reversal of 55587688 is 88678555.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (55587683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39981 + ... + 41347.

It is an arithmetic number, because the mean of its divisors is an integer number (1939140).

Almost surely, 2^55587688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55587688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62052480).

55587688 is an abundant number, since it is smaller than the sum of its proper divisors (68517272).

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

55587688 is a wasteful number, since it uses less digits than its factorization.

55587688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1422 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 52.

The square root of 55587688 is about 7455.7151233131. The cubic root of 55587688 is about 381.6449649397.

The spelling of 55587688 in words is "fifty-five million, five hundred eighty-seven thousand, six hundred eighty-eight".