921125 has 8 divisors (see below), whose sum is σ = 1149720. Its totient is φ = 736800.

The previous prime is 921121. The next prime is 921133. The reversal of 921125 is 521129.

It can be written as a sum of positive squares in 4 ways, for example, as 1444 + 919681 = 38^2 + 959^2 .

It is not a de Polignac number, because 921125 - 2² = 921121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 921097 and 921106.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 921125.

It is not an unprimeable number, because it can be changed into a prime (921121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3560 + ... + 3809.

It is an arithmetic number, because the mean of its divisors is an integer number (143715).

2⁹²¹¹²⁵ is an apocalyptic number.

It is an amenable number.

921125 is a deficient number, since it is larger than the sum of its proper divisors (228595).

921125 is an equidigital number, since it uses as much as digits as its factorization.

921125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7384 (or 7374 counting only the distinct ones).

The product of its digits is 180, while the sum is 20.

The square root of 921125 is about 959.7525722810. The cubic root of 921125 is about 97.2985100401.

The spelling of 921125 in words is "nine hundred twenty-one thousand, one hundred twenty-five".