1091125 has 32 divisors (see below), whose sum is σ = 1647360. Its totient is φ = 705600.

The previous prime is 1091119. The next prime is 1091137. The reversal of 1091125 is 5211901.

It is not a de Polignac number, because 1091125 - 2⁷ = 1090997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25354 + ... + 25396.

It is an arithmetic number, because the mean of its divisors is an integer number (51480).

2^1091125 is an apocalyptic number.

It is an amenable number.

1091125 is a deficient number, since it is larger than the sum of its proper divisors (556235).

1091125 is an equidigital number, since it uses as much as digits as its factorization.

1091125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1091125 is about 1044.5692892288. The cubic root of 1091125 is about 102.9496407606.

The spelling of 1091125 in words is "one million, ninety-one thousand, one hundred twenty-five".