189055 has 4 divisors (see below), whose sum is σ = 226872. Its totient is φ = 151240.

The previous prime is 189043. The next prime is 189061. The reversal of 189055 is 550981.

189055 = 175² + 176² + ... + 180².

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 189055 - 2⁷ = 188927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18901 + ... + 18910.

It is an arithmetic number, because the mean of its divisors is an integer number (56718).

2¹⁸⁹⁰⁵⁵ is an apocalyptic number.

189055 is a deficient number, since it is larger than the sum of its proper divisors (37817).

189055 is an equidigital number, since it uses as much as digits as its factorization.

189055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37816.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 189055 is about 434.8045537940. The cubic root of 189055 is about 57.3935016742.

The spelling of 189055 in words is "one hundred eighty-nine thousand, fifty-five".