55788 has 12 divisors (see below), whose sum is σ = 130200. Its totient is φ = 18592.

The previous prime is 55787. The next prime is 55793. The reversal of 55788 is 88755.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×55788² = 6224601888, which contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2313 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (10850).

2⁵⁵⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

55788 is an abundant number, since it is smaller than the sum of its proper divisors (74412).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65100).

55788 is a wasteful number, since it uses less digits than its factorization.

55788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656 (or 4654 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 55788 is about 236.1948348292. The cubic root of 55788 is about 38.2102838644.

Subtracting from 55788 its sum of digits (33), we obtain a palindrome (55755).

The spelling of 55788 in words is "fifty-five thousand, seven hundred eighty-eight".