11517387 has 16 divisors (see below), whose sum is σ = 17601792. Its totient is φ = 6562080.

The previous prime is 11517371. The next prime is 11517391. The reversal of 11517387 is 78371511.

It is not a de Polignac number, because 11517387 - 2⁴ = 11517371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11517307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9753 + ... + 10869.

It is an arithmetic number, because the mean of its divisors is an integer number (1100112).

Almost surely, 2^11517387 is an apocalyptic number.

11517387 is a deficient number, since it is larger than the sum of its proper divisors (6084405).

11517387 is a wasteful number, since it uses less digits than its factorization.

11517387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618.

The product of its digits is 5880, while the sum is 33.

The square root of 11517387 is about 3393.7275966111. The cubic root of 11517387 is about 225.8315697573.

Adding to 11517387 its reverse (78371511), we get a palindrome (89888898).

The spelling of 11517387 in words is "eleven million, five hundred seventeen thousand, three hundred eighty-seven".