11087509 has 2 divisors, whose sum is σ = 11087510. Its totient is φ = 11087508.

The previous prime is 11087501. The next prime is 11087513. The reversal of 11087509 is 90578011.

11087509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10745284 + 342225 = 3278^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 11087509 - 2³ = 11087501 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11087501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5543754 + 5543755.

It is an arithmetic number, because the mean of its divisors is an integer number (5543755).

Almost surely, 2^11087509 is an apocalyptic number.

It is an amenable number.

11087509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11087509 is an equidigital number, since it uses as much as digits as its factorization.

11087509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 11087509 is about 3329.7911345909. The cubic root of 11087509 is about 222.9862043789.

The spelling of 11087509 in words is "eleven million, eighty-seven thousand, five hundred nine".