11387651 has 4 divisors (see below), whose sum is σ = 12422904. Its totient is φ = 10352400.

The previous prime is 11387617. The next prime is 11387687. The reversal of 11387651 is 15678311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15678311 = 11 ⋅1425301.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11387651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11380651) 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 3 ways as a sum of consecutive naturals, for example, 517610 + ... + 517631.

It is an arithmetic number, because the mean of its divisors is an integer number (3105726).

Almost surely, 2^11387651 is an apocalyptic number.

11387651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11387651 is a deficient number, since it is larger than the sum of its proper divisors (1035253).

11387651 is a wasteful number, since it uses less digits than its factorization.

11387651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035252.

The product of its digits is 5040, while the sum is 32.

The square root of 11387651 is about 3374.5593786449. The cubic root of 11387651 is about 224.9804164025.

The spelling of 11387651 in words is "eleven million, three hundred eighty-seven thousand, six hundred fifty-one".