1189255 has 4 divisors (see below), whose sum is σ = 1427112. Its totient is φ = 951400.

The previous prime is 1189231. The next prime is 1189271. The reversal of 1189255 is 5529811.

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

It is not a de Polignac number, because 1189255 - 2⁷ = 1189127 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1189255 is a lucky 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, 118921 + ... + 118930.

It is an arithmetic number, because the mean of its divisors is an integer number (356778).

2^1189255 is an apocalyptic number.

1189255 is a deficient number, since it is larger than the sum of its proper divisors (237857).

1189255 is an equidigital number, since it uses as much as digits as its factorization.

1189255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237856.

The product of its digits is 3600, while the sum is 31.

The square root of 1189255 is about 1090.5296878123. The cubic root of 1189255 is about 105.9477314396.

It can be divided in two parts, 1189 and 255, that added together give a square (1444 = 38²).

The spelling of 1189255 in words is "one million, one hundred eighty-nine thousand, two hundred fifty-five".