133551532 has 12 divisors (see below), whose sum is σ = 246016120. Its totient is φ = 63261216.

The previous prime is 133551511. The next prime is 133551559. The reversal of 133551532 is 235155331.

It is a self number, because there is not a number n which added to its sum of digits gives 133551532.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878553 + ... + 878704.

Almost surely, 2^133551532 is an apocalyptic number.

It is an amenable number.

133551532 is a deficient number, since it is larger than the sum of its proper divisors (112464588).

133551532 is a wasteful number, since it uses less digits than its factorization.

133551532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757280 (or 1757278 counting only the distinct ones).

The product of its digits is 6750, while the sum is 28.

The square root of 133551532 is about 11556.4498008688. The cubic root of 133551532 is about 511.1514825424.

The spelling of 133551532 in words is "one hundred thirty-three million, five hundred fifty-one thousand, five hundred thirty-two".