11271787 has 2 divisors, whose sum is σ = 11271788. Its totient is φ = 11271786.

The previous prime is 11271781. The next prime is 11271829. The reversal of 11271787 is 78717211.

It is a weak prime.

It is an emirp because it is prime and its reverse (78717211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11271787 is a prime.

It is not a weakly prime, because it can be changed into another prime (11271781) 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 as a sum of consecutive naturals, namely, 5635893 + 5635894.

It is an arithmetic number, because the mean of its divisors is an integer number (5635894).

Almost surely, 2^11271787 is an apocalyptic number.

11271787 is a deficient number, since it is larger than the sum of its proper divisors (1).

11271787 is an equidigital number, since it uses as much as digits as its factorization.

11271787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5488, while the sum is 34.

The square root of 11271787 is about 3357.3482095249. The cubic root of 11271787 is about 224.2147905200.

Adding to 11271787 its reverse (78717211), we get a palindrome (89988998).

The spelling of 11271787 in words is "eleven million, two hundred seventy-one thousand, seven hundred eighty-seven".