1117491 has 4 divisors (see below), whose sum is σ = 1489992. Its totient is φ = 744992.

The previous prime is 1117489. The next prime is 1117513. The reversal of 1117491 is 1947111.

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

It is a cyclic number.

It is not a de Polignac number, because 1117491 - 2¹ = 1117489 is a prime.

It is a super-2 number, since 2×1117491² = 2497572270162, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1117451) 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, 186246 + ... + 186251.

It is an arithmetic number, because the mean of its divisors is an integer number (372498).

2^1117491 is an apocalyptic number.

1117491 is a deficient number, since it is larger than the sum of its proper divisors (372501).

1117491 is an equidigital number, since it uses as much as digits as its factorization.

1117491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372500.

The product of its digits is 252, while the sum is 24.

The square root of 1117491 is about 1057.1144687308. The cubic root of 1117491 is about 103.7722766314.

The spelling of 1117491 in words is "one million, one hundred seventeen thousand, four hundred ninety-one".