133506475 has 6 divisors (see below), whose sum is σ = 165548060. Its totient is φ = 106805160.

The previous prime is 133506473. The next prime is 133506479. The reversal of 133506475 is 574605331.

It is not a de Polignac number, because 133506475 - 2¹ = 133506473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133506475.

It is not an unprimeable number, because it can be changed into a prime (133506473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2670105 + ... + 2670154.

Almost surely, 2^133506475 is an apocalyptic number.

133506475 is a deficient number, since it is larger than the sum of its proper divisors (32041585).

133506475 is an equidigital number, since it uses as much as digits as its factorization.

133506475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340269 (or 5340264 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 133506475 is about 11554.5002055476. The cubic root of 133506475 is about 511.0939927667.

It can be divided in two parts, 13350647 and 5, that multiplied together give a triangular number (66753235 = T₁₁₅₅₄).

The spelling of 133506475 in words is "one hundred thirty-three million, five hundred six thousand, four hundred seventy-five".