11255987 has 4 divisors (see below), whose sum is σ = 11285760. Its totient is φ = 11226216.

The previous prime is 11255971. The next prime is 11256019. The reversal of 11255987 is 78955211.

11255987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78955211 = 883 ⋅89417.

It is a cyclic number.

It is not a de Polignac number, because 11255987 - 2⁴ = 11255971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11255987.

It is not an unprimeable number, because it can be changed into a prime (11255917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14312 + ... + 15077.

It is an arithmetic number, because the mean of its divisors is an integer number (2821440).

Almost surely, 2^11255987 is an apocalyptic number.

11255987 is a deficient number, since it is larger than the sum of its proper divisors (29773).

11255987 is an equidigital number, since it uses as much as digits as its factorization.

11255987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29772.

The product of its digits is 25200, while the sum is 38.

The square root of 11255987 is about 3354.9943368060. The cubic root of 11255987 is about 224.1099786792.

Adding to 11255987 its sum of digits (38), we get a square (11256025 = 3355²).

The spelling of 11255987 in words is "eleven million, two hundred fifty-five thousand, nine hundred eighty-seven".