135587 has 4 divisors (see below), whose sum is σ = 138936. Its totient is φ = 132240.

The previous prime is 135581. The next prime is 135589. The reversal of 135587 is 785531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785531 = 487 ⋅1613.

It is a cyclic number.

It is not a de Polignac number, because 135587 - 2⁴ = 135571 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 135587.

It is not an unprimeable number, because it can be changed into a prime (135581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (34734).

2¹³⁵⁵⁸⁷ is an apocalyptic number.

135587 is a deficient number, since it is larger than the sum of its proper divisors (3349).

135587 is an equidigital number, since it uses as much as digits as its factorization.

135587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348.

The product of its digits is 4200, while the sum is 29.

The square root of 135587 is about 368.2214007903. The cubic root of 135587 is about 51.3735231824.

The spelling of 135587 in words is "one hundred thirty-five thousand, five hundred eighty-seven".