1087171 has 4 divisors (see below), whose sum is σ = 1116592. Its totient is φ = 1057752.

The previous prime is 1087159. The next prime is 1087231. The reversal of 1087171 is 1717801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1717801 = 23 ⋅74687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087271) 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, 14655 + ... + 14728.

It is an arithmetic number, because the mean of its divisors is an integer number (279148).

2^1087171 is an apocalyptic number.

1087171 is a deficient number, since it is larger than the sum of its proper divisors (29421).

1087171 is an equidigital number, since it uses as much as digits as its factorization.

1087171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29420.

The product of its (nonzero) digits is 392, while the sum is 25.

The square root of 1087171 is about 1042.6749253722. The cubic root of 1087171 is about 102.8251345325.

The spelling of 1087171 in words is "one million, eighty-seven thousand, one hundred seventy-one".