133532550 has 60 divisors (see below), whose sum is σ = 371033916. Its totient is φ = 35607600.

The previous prime is 133532527. The next prime is 133532621. The reversal of 133532550 is 55235331.

133532550 is a `hidden beast` number, since 1 + 335 + 325 + 5 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 12436 + ... + 20535.

Almost surely, 2^133532550 is an apocalyptic number.

133532550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133532550 is an abundant number, since it is smaller than the sum of its proper divisors (237501366).

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

133532550 is a wasteful number, since it uses less digits than its factorization.

133532550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32995 (or 32981 counting only the distinct ones).

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

The square root of 133532550 is about 11555.6284987014. The cubic root of 133532550 is about 511.1272643323.

Adding to 133532550 its reverse (55235331), we get a palindrome (188767881).

The spelling of 133532550 in words is "one hundred thirty-three million, five hundred thirty-two thousand, five hundred fifty".