133550532 has 30 divisors (see below), whose sum is σ = 349128318. Its totient is φ = 44516736.

The previous prime is 133550509. The next prime is 133550537. The reversal of 133550532 is 235055331.

It can be written as a sum of positive squares in only one way, i.e., 129413376 + 4137156 = 11376^2 + 2034^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 133550496 and 133550505.

It is not an unprimeable number, because it can be changed into a prime (133550537) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 205773 + ... + 206420.

Almost surely, 2^133550532 is an apocalyptic number.

133550532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133550532 is an abundant number, since it is smaller than the sum of its proper divisors (215577786).

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

133550532 is a wasteful number, since it uses less digits than its factorization.

133550532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412209 (or 412198 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The square root of 133550532 is about 11556.4065349052. The cubic root of 133550532 is about 511.1502067483.

The spelling of 133550532 in words is "one hundred thirty-three million, five hundred fifty thousand, five hundred thirty-two".