133795217 has 4 divisors (see below), whose sum is σ = 133854900. Its totient is φ = 133735536.

The previous prime is 133795199. The next prime is 133795237. The reversal of 133795217 is 712597331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712597331 = 21341 ⋅33391.

It can be written as a sum of positive squares in 2 ways, for example, as 61952641 + 71842576 = 7871^2 + 8476^2 .

It is a cyclic number.

It is not a de Polignac number, because 133795217 - 2⁶ = 133795153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133795237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26342 + ... + 31007.

It is an arithmetic number, because the mean of its divisors is an integer number (33463725).

Almost surely, 2^133795217 is an apocalyptic number.

It is an amenable number.

133795217 is a deficient number, since it is larger than the sum of its proper divisors (59683).

133795217 is an equidigital number, since it uses as much as digits as its factorization.

133795217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59682.

The product of its digits is 39690, while the sum is 38.

The square root of 133795217 is about 11566.9882424078. The cubic root of 133795217 is about 511.4621847469.

The spelling of 133795217 in words is "one hundred thirty-three million, seven hundred ninety-five thousand, two hundred seventeen".