133375 has 16 divisors (see below), whose sum is σ = 183456. Its totient is φ = 96000.

The previous prime is 133351. The next prime is 133379. The reversal of 133375 is 573331.

It is not a de Polignac number, because 133375 - 2⁹ = 132863 is a prime.

It is a Duffinian number.

133375 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1327 + ... + 1423.

It is an arithmetic number, because the mean of its divisors is an integer number (11466).

2¹³³³⁷⁵ is an apocalyptic number.

133375 is a deficient number, since it is larger than the sum of its proper divisors (50081).

133375 is an equidigital number, since it uses as much as digits as its factorization.

133375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 113 counting only the distinct ones).

The product of its digits is 945, while the sum is 22.

The square root of 133375 is about 365.2054216465. The cubic root of 133375 is about 51.0926165319.

The spelling of 133375 in words is "one hundred thirty-three thousand, three hundred seventy-five".