133512461 has 2 divisors, whose sum is σ = 133512462. Its totient is φ = 133512460.

The previous prime is 133512451. The next prime is 133512473. The reversal of 133512461 is 164215331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68790436 + 64722025 = 8294^2 + 8045^2 .

It is a cyclic number.

It is not a de Polignac number, because 133512461 - 2⁶ = 133512397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133512461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133512451) 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 as a sum of consecutive naturals, namely, 66756230 + 66756231.

It is an arithmetic number, because the mean of its divisors is an integer number (66756231).

Almost surely, 2^133512461 is an apocalyptic number.

It is an amenable number.

133512461 is a deficient number, since it is larger than the sum of its proper divisors (1).

133512461 is an equidigital number, since it uses as much as digits as its factorization.

133512461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 133512461 is about 11554.7592359166. The cubic root of 133512461 is about 511.1016312549.

Adding to 133512461 its reverse (164215331), we get a palindrome (297727792).

The spelling of 133512461 in words is "one hundred thirty-three million, five hundred twelve thousand, four hundred sixty-one".