133550604 has 216 divisors, whose sum is σ = 408984576. Its totient is φ = 36590400.

The previous prime is 133550587. The next prime is 133550609. The reversal of 133550604 is 406055331.

133550604 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 50 + 604 = 666.

It is not an unprimeable number, because it can be changed into a prime (133550609) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3105807 + ... + 3105849.

Almost surely, 2^133550604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133550604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204492288).

133550604 is an abundant number, since it is smaller than the sum of its proper divisors (275433972).

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

133550604 is a wasteful number, since it uses less digits than its factorization.

133550604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 133550604 is about 11556.4096500600. The cubic root of 133550604 is about 511.1502986057.

The spelling of 133550604 in words is "one hundred thirty-three million, five hundred fifty thousand, six hundred four".