133540271 has 4 divisors (see below), whose sum is σ = 133893000. Its totient is φ = 133187544.

The previous prime is 133540261. The next prime is 133540291. The reversal of 133540271 is 172045331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172045331 = 79 ⋅2177789.

It is a cyclic number.

It is not a de Polignac number, because 133540271 - 2¹⁰ = 133539247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133540271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133540201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175796 + ... + 176553.

It is an arithmetic number, because the mean of its divisors is an integer number (33473250).

Almost surely, 2^133540271 is an apocalyptic number.

133540271 is a deficient number, since it is larger than the sum of its proper divisors (352729).

133540271 is an equidigital number, since it uses as much as digits as its factorization.

133540271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352728.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 133540271 is about 11555.9625734943. The cubic root of 133540271 is about 511.1371154574.

The spelling of 133540271 in words is "one hundred thirty-three million, five hundred forty thousand, two hundred seventy-one".