1112581 has 2 divisors, whose sum is σ = 1112582. Its totient is φ = 1112580.

The previous prime is 1112569. The next prime is 1112591. The reversal of 1112581 is 1852111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1083681 + 28900 = 1041^2 + 170^2 .

It is an emirp because it is prime and its reverse (1852111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112581 - 2⁵ = 1112549 is a prime.

It is a super-2 number, since 2×1112581² = 2475672963122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556290 + 556291.

It is an arithmetic number, because the mean of its divisors is an integer number (556291).

2^1112581 is an apocalyptic number.

It is an amenable number.

1112581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112581 is an equidigital number, since it uses as much as digits as its factorization.

1112581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80, while the sum is 19.

The square root of 1112581 is about 1054.7895524701. The cubic root of 1112581 is about 103.6200696051.

Adding to 1112581 its reverse (1852111), we get a palindrome (2964692).

The spelling of 1112581 in words is "one million, one hundred twelve thousand, five hundred eighty-one".