133854217 has 16 divisors (see below), whose sum is σ = 157377024. Its totient is φ = 111456000.

The previous prime is 133854157. The next prime is 133854223. The reversal of 133854217 is 712458331.

It is a cyclic number.

It is not a de Polignac number, because 133854217 - 2²³ = 125465609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133854247) 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, 76917 + ... + 78637.

It is an arithmetic number, because the mean of its divisors is an integer number (9836064).

Almost surely, 2^133854217 is an apocalyptic number.

It is an amenable number.

133854217 is a deficient number, since it is larger than the sum of its proper divisors (23522807).

133854217 is a wasteful number, since it uses less digits than its factorization.

133854217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040.

The product of its digits is 20160, while the sum is 34.

The square root of 133854217 is about 11569.5383226817. The cubic root of 133854217 is about 511.5373539371.

It can be divided in two parts, 1338 and 54217, that added together give a palindrome (55555).

The spelling of 133854217 in words is "one hundred thirty-three million, eight hundred fifty-four thousand, two hundred seventeen".