1116531 has 16 divisors (see below), whose sum is σ = 1781920. Its totient is φ = 686880.

The previous prime is 1116523. The next prime is 1116541. The reversal of 1116531 is 1356111.

1116531 is a `hidden beast` number, since 1 + 11 + 653 + 1 = 666.

It is not a de Polignac number, because 1116531 - 2³ = 1116523 is a prime.

It is a super-2 number, since 2×1116531² = 2493282947922, which contains 22 as substring.

It is a Duffinian number.

1116531 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1116541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1240 + ... + 1941.

It is an arithmetic number, because the mean of its divisors is an integer number (111370).

2^1116531 is an apocalyptic number.

1116531 is a deficient number, since it is larger than the sum of its proper divisors (665389).

1116531 is a wasteful number, since it uses less digits than its factorization.

1116531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203 (or 3197 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 1116531 is about 1056.6603049230. The cubic root of 1116531 is about 103.7425523274.

The spelling of 1116531 in words is "one million, one hundred sixteen thousand, five hundred thirty-one".