11500087 has 2 divisors, whose sum is σ = 11500088. Its totient is φ = 11500086.

The previous prime is 11500079. The next prime is 11500127. The reversal of 11500087 is 78000511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11500087 - 2³ = 11500079 is a prime.

It is a super-3 number, since 3×11500087³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11500057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5750043 + 5750044.

It is an arithmetic number, because the mean of its divisors is an integer number (5750044).

Almost surely, 2^11500087 is an apocalyptic number.

11500087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11500087 is an equidigital number, since it uses as much as digits as its factorization.

11500087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 11500087 is about 3391.1778189886. The cubic root of 11500087 is about 225.7184409739.

Adding to 11500087 its reverse (78000511), we get a palindrome (89500598).

The spelling of 11500087 in words is "eleven million, five hundred thousand, eighty-seven".