133632081 has 24 divisors (see below), whose sum is σ = 211550976. Its totient is φ = 80612640.

The previous prime is 133632077. The next prime is 133632101. The reversal of 133632081 is 180236331.

It is a happy number.

133632081 is a `hidden beast` number, since 1 + 336 + 320 + 8 + 1 = 666.

It is not a de Polignac number, because 133632081 - 2² = 133632077 is a prime.

It is a super-2 number, since 2×133632081² = 35715066144781122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133632061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19051 + ... + 25103.

It is an arithmetic number, because the mean of its divisors is an integer number (8814624).

Almost surely, 2^133632081 is an apocalyptic number.

133632081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133632081 is a deficient number, since it is larger than the sum of its proper divisors (77918895).

133632081 is a wasteful number, since it uses less digits than its factorization.

133632081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293 (or 6290 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 133632081 is about 11559.9342991213. The cubic root of 133632081 is about 511.2542255695.

The spelling of 133632081 in words is "one hundred thirty-three million, six hundred thirty-two thousand, eighty-one".