133545506 has 32 divisors (see below), whose sum is σ = 220631040. Its totient is φ = 60362496.

The previous prime is 133545491. The next prime is 133545527. The reversal of 133545506 is 605545331.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 103775 + ... + 105053.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^133545506 is an apocalyptic number.

133545506 is a deficient number, since it is larger than the sum of its proper divisors (87085534).

133545506 is a wasteful number, since it uses less digits than its factorization.

133545506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 133545506 is about 11556.1890777193. The cubic root of 133545506 is about 511.1437945108.

The spelling of 133545506 in words is "one hundred thirty-three million, five hundred forty-five thousand, five hundred six".