133587 has 6 divisors (see below), whose sum is σ = 192972. Its totient is φ = 89052.

The previous prime is 133583. The next prime is 133597. The reversal of 133587 is 785331.

It is not a de Polignac number, because 133587 - 2² = 133583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133587.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 133587.

It is not an unprimeable number, because it can be changed into a prime (133583) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7413 + ... + 7430.

It is an arithmetic number, because the mean of its divisors is an integer number (32162).

2¹³³⁵⁸⁷ is an apocalyptic number.

133587 is a deficient number, since it is larger than the sum of its proper divisors (59385).

133587 is a wasteful number, since it uses less digits than its factorization.

133587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14849 (or 14846 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 133587 is about 365.4955540085. The cubic root of 133587 is about 51.1196728288.

It can be divided in two parts, 13 and 3587, that added together give a square (3600 = 60²).

The spelling of 133587 in words is "one hundred thirty-three thousand, five hundred eighty-seven".