11387755 has 4 divisors (see below), whose sum is σ = 13665312. Its totient is φ = 9110200.

The previous prime is 11387741. The next prime is 11387777. The reversal of 11387755 is 55778311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55778311 = 103 ⋅541537.

It is a de Polignac number, because none of the positive numbers 2^k-11387755 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138771 + ... + 1138780.

It is an arithmetic number, because the mean of its divisors is an integer number (3416328).

Almost surely, 2^11387755 is an apocalyptic number.

11387755 is a deficient number, since it is larger than the sum of its proper divisors (2277557).

11387755 is an equidigital number, since it uses as much as digits as its factorization.

11387755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277556.

The product of its digits is 29400, while the sum is 37.

The square root of 11387755 is about 3374.5747880289. The cubic root of 11387755 is about 224.9811012933.

The spelling of 11387755 in words is "eleven million, three hundred eighty-seven thousand, seven hundred fifty-five".