538133217 has 16 divisors (see below), whose sum is σ = 737585472. Its totient is φ = 348736320.

The previous prime is 538133203. The next prime is 538133243. The reversal of 538133217 is 712331835.

It is not a de Polignac number, because 538133217 - 2⁶ = 538133153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (538133287) 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, 199683 + ... + 202359.

It is an arithmetic number, because the mean of its divisors is an integer number (46099092).

Almost surely, 2^538133217 is an apocalyptic number.

It is an amenable number.

538133217 is a deficient number, since it is larger than the sum of its proper divisors (199452255).

538133217 is a wasteful number, since it uses less digits than its factorization.

538133217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528.

The product of its digits is 15120, while the sum is 33.

The square root of 538133217 is about 23197.6985280868. The cubic root of 538133217 is about 813.3858258956.

The spelling of 538133217 in words is "five hundred thirty-eight million, one hundred thirty-three thousand, two hundred seventeen".