115557587 has 2 divisors, whose sum is σ = 115557588. Its totient is φ = 115557586.

The previous prime is 115557583. The next prime is 115557643. The reversal of 115557587 is 785755511.

It is a weak prime.

It is an emirp because it is prime and its reverse (785755511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115557587 - 2² = 115557583 is a prime.

It is not a weakly prime, because it can be changed into another prime (115557583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57778793 + 57778794.

It is an arithmetic number, because the mean of its divisors is an integer number (57778794).

Almost surely, 2^115557587 is an apocalyptic number.

115557587 is a deficient number, since it is larger than the sum of its proper divisors (1).

115557587 is an equidigital number, since it uses as much as digits as its factorization.

115557587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 245000, while the sum is 44.

The square root of 115557587 is about 10749.7714859433. The cubic root of 115557587 is about 487.0790924897.

The spelling of 115557587 in words is "one hundred fifteen million, five hundred fifty-seven thousand, five hundred eighty-seven".