133544532 has 48 divisors (see below), whose sum is σ = 354719232. Its totient is φ = 38707680.

The previous prime is 133544519. The next prime is 133544533. The reversal of 133544532 is 235445331.

It is a self number, because there is not a number n which added to its sum of digits gives 133544532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133544533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18958 + ... + 25029.

It is an arithmetic number, because the mean of its divisors is an integer number (7389984).

Almost surely, 2^133544532 is an apocalyptic number.

133544532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133544532 is an abundant number, since it is smaller than the sum of its proper divisors (221174700).

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

133544532 is a wasteful number, since it uses less digits than its factorization.

133544532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44028 (or 44026 counting only the distinct ones).

The product of its digits is 21600, while the sum is 30.

The square root of 133544532 is about 11556.1469357221. The cubic root of 133544532 is about 511.1425518501.

Adding to 133544532 its reverse (235445331), we get a palindrome (368989863).

It can be divided in two parts, 1 and 33544532, that added together give a palindrome (33544533).

The spelling of 133544532 in words is "one hundred thirty-three million, five hundred forty-four thousand, five hundred thirty-two".