133955 has 8 divisors (see below), whose sum is σ = 163392. Its totient is φ = 105408.

The previous prime is 133949. The next prime is 133963. The reversal of 133955 is 559331.

133955 is nontrivially palindromic in base 14.

It is a Cunningham number, because it is equal to 366²-1.

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 133955 - 2¹⁴ = 117571 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

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, 182 + ... + 548.

It is an arithmetic number, because the mean of its divisors is an integer number (20424).

2¹³³⁹⁵⁵ is an apocalyptic number.

133955 is a deficient number, since it is larger than the sum of its proper divisors (29437).

133955 is an equidigital number, since it uses as much as digits as its factorization.

133955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its digits is 2025, while the sum is 26.

The square root of 133955 is about 365.9986338772. The cubic root of 133955 is about 51.1665705853.

It can be divided in two parts, 13 and 3955, that multiplied together give a palindrome (51415).

The spelling of 133955 in words is "one hundred thirty-three thousand, nine hundred fifty-five".