11440513 has 8 divisors (see below), whose sum is σ = 13296960. Its totient is φ = 9639600.

The previous prime is 11440493. The next prime is 11440549. The reversal of 11440513 is 31504411.

11440513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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-11440513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11440553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13438 + ... + 14263.

It is an arithmetic number, because the mean of its divisors is an integer number (1662120).

Almost surely, 2^11440513 is an apocalyptic number.

It is an amenable number.

11440513 is a deficient number, since it is larger than the sum of its proper divisors (1856447).

11440513 is an equidigital number, since it uses as much as digits as its factorization.

11440513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27767.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 11440513 is about 3382.3827400222. The cubic root of 11440513 is about 225.3280022684.

Adding to 11440513 its reverse (31504411), we get a palindrome (42944924).

The spelling of 11440513 in words is "eleven million, four hundred forty thousand, five hundred thirteen".