1125291 has 4 divisors (see below), whose sum is σ = 1500392. Its totient is φ = 750192.

The previous prime is 1125283. The next prime is 1125317. The reversal of 1125291 is 1925211.

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

It is not a de Polignac number, because 1125291 - 2³ = 1125283 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187546 + ... + 187551.

It is an arithmetic number, because the mean of its divisors is an integer number (375098).

2^1125291 is an apocalyptic number.

1125291 is a deficient number, since it is larger than the sum of its proper divisors (375101).

1125291 is an equidigital number, since it uses as much as digits as its factorization.

1125291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375100.

The product of its digits is 180, while the sum is 21.

The square root of 1125291 is about 1060.7973416256. The cubic root of 1125291 is about 104.0131578520.

The spelling of 1125291 in words is "one million, one hundred twenty-five thousand, two hundred ninety-one".