11520287 has 2 divisors, whose sum is σ = 11520288. Its totient is φ = 11520286.

The previous prime is 11520269. The next prime is 11520293. The reversal of 11520287 is 78202511.

It is a strong prime.

It is an emirp because it is prime and its reverse (78202511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11520287 - 2⁸ = 11520031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11520227) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760143 + 5760144.

It is an arithmetic number, because the mean of its divisors is an integer number (5760144).

Almost surely, 2^11520287 is an apocalyptic number.

11520287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11520287 is an equidigital number, since it uses as much as digits as its factorization.

11520287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 11520287 is about 3394.1548285251. The cubic root of 11520287 is about 225.8505224530.

Adding to 11520287 its reverse (78202511), we get a palindrome (89722798).

It can be divided in two parts, 115 and 20287, that added together give a palindrome (20402).

The spelling of 11520287 in words is "eleven million, five hundred twenty thousand, two hundred eighty-seven".