133895 has 8 divisors (see below), whose sum is σ = 163680. Its totient is φ = 105120.

The previous prime is 133877. The next prime is 133919. The reversal of 133895 is 598331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133895 - 2⁶ = 133831 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 86 + ... + 524.

It is an arithmetic number, because the mean of its divisors is an integer number (20460).

2¹³³⁸⁹⁵ is an apocalyptic number.

133895 is a deficient number, since it is larger than the sum of its proper divisors (29785).

133895 is an equidigital number, since it uses as much as digits as its factorization.

133895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505.

The product of its digits is 3240, while the sum is 29.

The square root of 133895 is about 365.9166571776. The cubic root of 133895 is about 51.1589300774.

The spelling of 133895 in words is "one hundred thirty-three thousand, eight hundred ninety-five".