133496621 has 2 divisors, whose sum is σ = 133496622. Its totient is φ = 133496620.

The previous prime is 133496611. The next prime is 133496653. The reversal of 133496621 is 126694331.

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., 133148521 + 348100 = 11539^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 133496621 - 2¹⁰ = 133495597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133496611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66748310 + 66748311.

It is an arithmetic number, because the mean of its divisors is an integer number (66748311).

Almost surely, 2^133496621 is an apocalyptic number.

It is an amenable number.

133496621 is a deficient number, since it is larger than the sum of its proper divisors (1).

133496621 is an equidigital number, since it uses as much as digits as its factorization.

133496621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 133496621 is about 11554.0737837353. The cubic root of 133496621 is about 511.0814179855.

The spelling of 133496621 in words is "one hundred thirty-three million, four hundred ninety-six thousand, six hundred twenty-one".