133551144 has 48 divisors (see below), whose sum is σ = 362469120. Its totient is φ = 44422560.

The previous prime is 133551127. The next prime is 133551169. The reversal of 133551144 is 441155331.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37689 + ... + 41079.

It is an arithmetic number, because the mean of its divisors is an integer number (7551440).

Almost surely, 2^133551144 is an apocalyptic number.

It is an amenable number.

133551144 is an abundant number, since it is smaller than the sum of its proper divisors (228917976).

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

133551144 is a wasteful number, since it uses less digits than its factorization.

133551144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950 (or 3943 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 133551144 is about 11556.4330136941. The cubic root of 133551144 is about 511.1509875350.

The spelling of 133551144 in words is "one hundred thirty-three million, five hundred fifty-one thousand, one hundred forty-four".