133995 has 8 divisors (see below), whose sum is σ = 214416. Its totient is φ = 71456.

The previous prime is 133993. The next prime is 133999. The reversal of 133995 is 599331.

133995 = 31² + 32² + ... + 75².

133995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 133995 - 2¹ = 133993 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (133993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4452 + ... + 4481.

It is an arithmetic number, because the mean of its divisors is an integer number (26802).

2¹³³⁹⁹⁵ is an apocalyptic number.

133995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133995 is a deficient number, since it is larger than the sum of its proper divisors (80421).

133995 is an equidigital number, since it uses as much as digits as its factorization.

133995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8941.

The product of its digits is 3645, while the sum is 30.

The square root of 133995 is about 366.0532748112. The cubic root of 133995 is about 51.1716629898.

It can be divided in two parts, 133 and 995, that added together give a triangular number (1128 = T₄₇).

The spelling of 133995 in words is "one hundred thirty-three thousand, nine hundred ninety-five".