1171291 has 8 divisors (see below), whose sum is σ = 1286064. Its totient is φ = 1057920.

The previous prime is 1171267. The next prime is 1171301. The reversal of 1171291 is 1921711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1171291 - 2⁵ = 1171259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171201) 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, 2335 + ... + 2791.

It is an arithmetic number, because the mean of its divisors is an integer number (160758).

2^1171291 is an apocalyptic number.

1171291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1171291 is a deficient number, since it is larger than the sum of its proper divisors (114773).

1171291 is a wasteful number, since it uses less digits than its factorization.

1171291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

The product of its digits is 126, while the sum is 22.

The square root of 1171291 is about 1082.2619830706. The cubic root of 1171291 is about 105.4115668419.

The spelling of 1171291 in words is "one million, one hundred seventy-one thousand, two hundred ninety-one".