115566587 has 2 divisors, whose sum is σ = 115566588. Its totient is φ = 115566586.

The previous prime is 115566551. The next prime is 115566613. The reversal of 115566587 is 785665511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115566587 - 2¹⁴ = 115550203 is a prime.

It is not a weakly prime, because it can be changed into another prime (115566547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57783293 + 57783294.

It is an arithmetic number, because the mean of its divisors is an integer number (57783294).

Almost surely, 2^115566587 is an apocalyptic number.

115566587 is a deficient number, since it is larger than the sum of its proper divisors (1).

115566587 is an equidigital number, since it uses as much as digits as its factorization.

115566587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 44.

The square root of 115566587 is about 10750.1900913426. The cubic root of 115566587 is about 487.0917372617.

The spelling of 115566587 in words is "one hundred fifteen million, five hundred sixty-six thousand, five hundred eighty-seven".