133554 has 8 divisors (see below), whose sum is σ = 267120. Its totient is φ = 44516.

The previous prime is 133543. The next prime is 133559. The reversal of 133554 is 455331.

133554 is nontrivially palindromic in base 12.

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

133554 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 133554.

It is not an unprimeable number, because it can be changed into a prime (133559) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11124 + ... + 11135.

It is an arithmetic number, because the mean of its divisors is an integer number (33390).

2¹³³⁵⁵⁴ is an apocalyptic number.

133554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133554 is a wasteful number, since it uses less digits than its factorization.

133554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22264.

The product of its digits is 900, while the sum is 21.

The square root of 133554 is about 365.4504070322. The cubic root of 133554 is about 51.1154631175.

Adding to 133554 its reverse (455331), we get a palindrome (588885).

The spelling of 133554 in words is "one hundred thirty-three thousand, five hundred fifty-four".