133475487 has 16 divisors (see below), whose sum is σ = 185747040. Its totient is φ = 85148672.

The previous prime is 133475479. The next prime is 133475521. The reversal of 133475487 is 784574331.

It is a cyclic number.

It is not a de Polignac number, because 133475487 - 2³ = 133475479 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133475887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3043 + ... + 16619.

It is an arithmetic number, because the mean of its divisors is an integer number (11609190).

Almost surely, 2^133475487 is an apocalyptic number.

133475487 is a deficient number, since it is larger than the sum of its proper divisors (52271553).

133475487 is a wasteful number, since it uses less digits than its factorization.

133475487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13722.

The product of its digits is 282240, while the sum is 42.

The square root of 133475487 is about 11553.1591783373. The cubic root of 133475487 is about 511.0544466044.

The spelling of 133475487 in words is "one hundred thirty-three million, four hundred seventy-five thousand, four hundred eighty-seven".