133805545 has 16 divisors (see below), whose sum is σ = 163078272. Its totient is φ = 105379840.

The previous prime is 133805531. The next prime is 133805563. The reversal of 133805545 is 545508331.

It is not a de Polignac number, because 133805545 - 2⁹ = 133805033 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 133805545.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 208425 + ... + 209065.

It is an arithmetic number, because the mean of its divisors is an integer number (10192392).

Almost surely, 2^133805545 is an apocalyptic number.

It is an amenable number.

133805545 is a deficient number, since it is larger than the sum of its proper divisors (29272727).

133805545 is an equidigital number, since it uses as much as digits as its factorization.

133805545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 133805545 is about 11567.4346767120. The cubic root of 133805545 is about 511.4753447727.

The spelling of 133805545 in words is "one hundred thirty-three million, eight hundred five thousand, five hundred forty-five".