11325581 has 8 divisors (see below), whose sum is σ = 11608800. Its totient is φ = 11045520.

The previous prime is 11325563. The next prime is 11325593. The reversal of 11325581 is 18552311.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11325581 is a prime.

It is a super-2 number, since 2×11325581² = 256537569975122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11325581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11325511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7511 + ... + 8891.

It is an arithmetic number, because the mean of its divisors is an integer number (1451100).

Almost surely, 2^11325581 is an apocalyptic number.

It is an amenable number.

11325581 is a deficient number, since it is larger than the sum of its proper divisors (283219).

11325581 is a wasteful number, since it uses less digits than its factorization.

11325581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579.

The product of its digits is 1200, while the sum is 26.

The square root of 11325581 is about 3365.3500560863. The cubic root of 11325581 is about 224.5709089620.

Adding to 11325581 its reverse (18552311), we get a palindrome (29877892).

The spelling of 11325581 in words is "eleven million, three hundred twenty-five thousand, five hundred eighty-one".