55188200 has 24 divisors (see below), whose sum is σ = 128313030. Its totient is φ = 22075200.

The previous prime is 55188197. The next prime is 55188223. The reversal of 55188200 is 288155.

It can be written as a sum of positive squares in 3 ways, for example, as 33154564 + 22033636 = 5758^2 + 4694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137771 + ... + 138170.

Almost surely, 2^55188200 is an apocalyptic number.

55188200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55188200 is an abundant number, since it is smaller than the sum of its proper divisors (73124830).

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

55188200 is a wasteful number, since it uses less digits than its factorization.

55188200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275957 (or 275948 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 55188200 is about 7428.8760926536. The cubic root of 55188200 is about 380.7285193197.

The spelling of 55188200 in words is "fifty-five million, one hundred eighty-eight thousand, two hundred".