133355508 has 48 divisors (see below), whose sum is σ = 365566656. Its totient is φ = 37301760.

The previous prime is 133355507. The next prime is 133355533. The reversal of 133355508 is 805553331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133355507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37141 + ... + 40572.

It is an arithmetic number, because the mean of its divisors is an integer number (7615972).

Almost surely, 2^133355508 is an apocalyptic number.

It is an amenable number.

133355508 is an abundant number, since it is smaller than the sum of its proper divisors (232211148).

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

133355508 is a wasteful number, since it uses less digits than its factorization.

133355508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77744 (or 77742 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 133355508 is about 11547.9655351062. The cubic root of 133355508 is about 510.9012744529.

The spelling of 133355508 in words is "one hundred thirty-three million, three hundred fifty-five thousand, five hundred eight".