550188 has 72 divisors (see below), whose sum is σ = 1572480. Its totient is φ = 161280.

The previous prime is 550181. The next prime is 550189. The reversal of 550188 is 881055.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550188.

It is not an unprimeable number, because it can be changed into a prime (550181) by changing a digit.

550188 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 23 ways as a sum of consecutive naturals, for example, 17733 + ... + 17763.

It is an arithmetic number, because the mean of its divisors is an integer number (21840).

2⁵⁵⁰¹⁸⁸ is an apocalyptic number.

550188 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786240).

550188 is an abundant number, since it is smaller than the sum of its proper divisors (1022292).

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

550188 is a wasteful number, since it uses less digits than its factorization.

550188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 550188 is about 741.7465874542. The cubic root of 550188 is about 81.9414612935.

The spelling of 550188 in words is "five hundred fifty thousand, one hundred eighty-eight".