133553332 has 48 divisors (see below), whose sum is σ = 265144320. Its totient is φ = 58312800.

The previous prime is 133553297. The next prime is 133553347. The reversal of 133553332 is 233355331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 133553332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243883 + ... + 244429.

It is an arithmetic number, because the mean of its divisors is an integer number (5523840).

Almost surely, 2^133553332 is an apocalyptic number.

It is an amenable number.

133553332 is a deficient number, since it is larger than the sum of its proper divisors (131590988).

133553332 is a wasteful number, since it uses less digits than its factorization.

133553332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 770 counting only the distinct ones).

The product of its digits is 12150, while the sum is 28.

The square root of 133553332 is about 11556.5276791950. The cubic root of 133553332 is about 511.1537789556.

The spelling of 133553332 in words is "one hundred thirty-three million, five hundred fifty-three thousand, three hundred thirty-two".