133432550 has 24 divisors (see below), whose sum is σ = 250150656. Its totient is φ = 52950240.

The previous prime is 133432549. The next prime is 133432553. The reversal of 133432550 is 55234331.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133432553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4157 + ... + 16856.

It is an arithmetic number, because the mean of its divisors is an integer number (10422944).

Almost surely, 2^133432550 is an apocalyptic number.

133432550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133432550 is a deficient number, since it is larger than the sum of its proper divisors (116718106).

133432550 is a wasteful number, since it uses less digits than its factorization.

133432550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21152 (or 21147 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 133432550 is about 11551.3007925515. The cubic root of 133432550 is about 510.9996412899. Note that the first 3 decimals are identical.

Adding to 133432550 its reverse (55234331), we get a palindrome (188666881).

The spelling of 133432550 in words is "one hundred thirty-three million, four hundred thirty-two thousand, five hundred fifty".