1075891 has 4 divisors (see below), whose sum is σ = 1077984. Its totient is φ = 1073800.

The previous prime is 1075859. The next prime is 1075897. The reversal of 1075891 is 1985701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1985701 = 563 ⋅3527.

It is a cyclic number.

It is not a de Polignac number, because 1075891 - 2⁵ = 1075859 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1075897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (269496).

2^1075891 is an apocalyptic number.

1075891 is a deficient number, since it is larger than the sum of its proper divisors (2093).

1075891 is an equidigital number, since it uses as much as digits as its factorization.

1075891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1075891 is about 1037.2516570245. The cubic root of 1075891 is about 102.4682749328.

The spelling of 1075891 in words is "one million, seventy-five thousand, eight hundred ninety-one".