11387571 has 16 divisors (see below), whose sum is σ = 16880640. Its totient is φ = 6780960.

The previous prime is 11387549. The next prime is 11387573. The reversal of 11387571 is 17578311.

It is not a de Polignac number, because 11387571 - 2⁵ = 11387539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11387573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3501 + ... + 5918.

It is an arithmetic number, because the mean of its divisors is an integer number (1055040).

Almost surely, 2^11387571 is an apocalyptic number.

11387571 is a deficient number, since it is larger than the sum of its proper divisors (5493069).

11387571 is a wasteful number, since it uses less digits than its factorization.

11387571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466.

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

The square root of 11387571 is about 3374.5475252247. The cubic root of 11387571 is about 224.9798895606.

The spelling of 11387571 in words is "eleven million, three hundred eighty-seven thousand, five hundred seventy-one".