133500617 has 2 divisors, whose sum is σ = 133500618. Its totient is φ = 133500616.

The previous prime is 133500613. The next prime is 133500667. The reversal of 133500617 is 716005331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86564416 + 46936201 = 9304^2 + 6851^2 .

It is a cyclic number.

It is not a de Polignac number, because 133500617 - 2² = 133500613 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133500613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66750308 + 66750309.

It is an arithmetic number, because the mean of its divisors is an integer number (66750309).

Almost surely, 2^133500617 is an apocalyptic number.

It is an amenable number.

133500617 is a deficient number, since it is larger than the sum of its proper divisors (1).

133500617 is an equidigital number, since it uses as much as digits as its factorization.

133500617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 133500617 is about 11554.2467084618. The cubic root of 133500617 is about 511.0865173929.

Adding to 133500617 its reverse (716005331), we get a palindrome (849505948).

The spelling of 133500617 in words is "one hundred thirty-three million, five hundred thousand, six hundred seventeen".