891125 has 8 divisors (see below), whose sum is σ = 1112280. Its totient is φ = 712800.

The previous prime is 891103. The next prime is 891133. The reversal of 891125 is 521198.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18769 + 872356 = 137^2 + 934^2 .

It is not a de Polignac number, because 891125 - 2⁶ = 891061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 891094 and 891103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3440 + ... + 3689.

It is an arithmetic number, because the mean of its divisors is an integer number (139035).

2⁸⁹¹¹²⁵ is an apocalyptic number.

It is an amenable number.

891125 is a deficient number, since it is larger than the sum of its proper divisors (221155).

891125 is an equidigital number, since it uses as much as digits as its factorization.

891125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144 (or 7134 counting only the distinct ones).

The product of its digits is 720, while the sum is 26.

The square root of 891125 is about 943.9941737108. The cubic root of 891125 is about 96.2305295973.

It can be divided in two parts, 8 and 91125, that multiplied together give a cube (729000 = 90³).

The spelling of 891125 in words is "eight hundred ninety-one thousand, one hundred twenty-five".