133506297 has 6 divisors (see below), whose sum is σ = 192842442. Its totient is φ = 89004192.

The previous prime is 133506281. The next prime is 133506299. The reversal of 133506297 is 792605331.

133506297 is a `hidden beast` number, since 13 + 350 + 6 + 297 = 666.

It can be written as a sum of positive squares in only one way, i.e., 102637161 + 30869136 = 10131^2 + 5556^2 .

It is not a de Polignac number, because 133506297 - 2⁴ = 133506281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133506299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7417008 + ... + 7417025.

It is an arithmetic number, because the mean of its divisors is an integer number (32140407).

Almost surely, 2^133506297 is an apocalyptic number.

It is an amenable number.

133506297 is a deficient number, since it is larger than the sum of its proper divisors (59336145).

133506297 is a wasteful number, since it uses less digits than its factorization.

133506297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14834039 (or 14834036 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 133506297 is about 11554.4925029185. The cubic root of 133506297 is about 511.0937656247.

The spelling of 133506297 in words is "one hundred thirty-three million, five hundred six thousand, two hundred ninety-seven".