133874217 has 6 divisors (see below), whose sum is σ = 193373882. Its totient is φ = 89249472.

The previous prime is 133874207. The next prime is 133874219. The reversal of 133874217 is 712478331.

It can be written as a sum of positive squares in only one way, i.e., 85766121 + 48108096 = 9261^2 + 6936^2 .

It is not a de Polignac number, because 133874217 - 2¹¹ = 133872169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133874219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7437448 + ... + 7437465.

Almost surely, 2^133874217 is an apocalyptic number.

It is an amenable number.

133874217 is a deficient number, since it is larger than the sum of its proper divisors (59499665).

133874217 is a wasteful number, since it uses less digits than its factorization.

133874217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14874919 (or 14874916 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 133874217 is about 11570.4026291223. The cubic root of 133874217 is about 511.5628300055.

The spelling of 133874217 in words is "one hundred thirty-three million, eight hundred seventy-four thousand, two hundred seventeen".