133548 has 24 divisors (see below), whose sum is σ = 322560. Its totient is φ = 42960.

The previous prime is 133543. The next prime is 133559. The reversal of 133548 is 845331.

It is not an unprimeable number, because it can be changed into a prime (133541) 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 7 ways as a sum of consecutive naturals, for example, 193 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (13440).

2¹³³⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

133548 is an abundant number, since it is smaller than the sum of its proper divisors (189012).

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

133548 is a wasteful number, since it uses less digits than its factorization.

133548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 395 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 133548 is about 365.4421978918. The cubic root of 133548 is about 51.1146976409.

Adding to 133548 its reverse (845331), we get a palindrome (978879).

The spelling of 133548 in words is "one hundred thirty-three thousand, five hundred forty-eight".