55528 has 16 divisors (see below), whose sum is σ = 113760. Its totient is φ = 25200.

The previous prime is 55511. The next prime is 55529. The reversal of 55528 is 82555.

55528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (55529) by changing a digit.

55528 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228 + ... + 403.

It is an arithmetic number, because the mean of its divisors is an integer number (7110).

2⁵⁵⁵²⁸ is an apocalyptic number.

It is an amenable number.

55528 is an abundant number, since it is smaller than the sum of its proper divisors (58232).

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 (56880).

55528 is a wasteful number, since it uses less digits than its factorization.

55528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 644 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 55528 is about 235.6437989848. The cubic root of 55528 is about 38.1508317277.

The spelling of 55528 in words is "fifty-five thousand, five hundred twenty-eight".