55528188 has 48 divisors (see below), whose sum is σ = 137803680. Its totient is φ = 17342464.

The previous prime is 55528181. The next prime is 55528211. The reversal of 55528188 is 88182555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55528181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59308 + ... + 60236.

It is an arithmetic number, because the mean of its divisors is an integer number (2870910).

Almost surely, 2^55528188 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 55528188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68901840).

55528188 is an abundant number, since it is smaller than the sum of its proper divisors (82275492).

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

55528188 is a wasteful number, since it uses less digits than its factorization.

55528188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246 (or 1244 counting only the distinct ones).

The product of its digits is 128000, while the sum is 42.

The square root of 55528188 is about 7451.7238274107. The cubic root of 55528188 is about 381.5087478319.

The spelling of 55528188 in words is "fifty-five million, five hundred twenty-eight thousand, one hundred eighty-eight".