11440521 has 10 divisors (see below), whose sum is σ = 17090282. Its totient is φ = 7626960.

The previous prime is 11440493. The next prime is 11440549. The reversal of 11440521 is 12504411.

11440521 is a `hidden beast` number, since 1 + 144 + 0 + 521 = 666.

It is an interprime number because it is at equal distance from previous prime (11440493) and next prime (11440549).

It can be written as a sum of positive squares in only one way, i.e., 11148921 + 291600 = 3339^2 + 540^2 .

It is not a de Polignac number, because 11440521 - 2⁷ = 11440393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11440494 and 11440503.

It is not an unprimeable number, because it can be changed into a prime (11440321) 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 9 ways as a sum of consecutive naturals, for example, 70540 + ... + 70701.

Almost surely, 2^11440521 is an apocalyptic number.

It is an amenable number.

11440521 is a deficient number, since it is larger than the sum of its proper divisors (5649761).

11440521 is an equidigital number, since it uses as much as digits as its factorization.

11440521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141253 (or 141244 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 11440521 is about 3382.3839226203. The cubic root of 11440521 is about 225.3280547900.

Adding to 11440521 its reverse (12504411), we get a palindrome (23944932).

The spelling of 11440521 in words is "eleven million, four hundred forty thousand, five hundred twenty-one".