133027621 has 2 divisors, whose sum is σ = 133027622. Its totient is φ = 133027620.

The previous prime is 133027619. The next prime is 133027627. The reversal of 133027621 is 126720331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132365025 + 662596 = 11505^2 + 814^2 .

It is a cyclic number.

It is not a de Polignac number, because 133027621 - 2¹ = 133027619 is a prime.

Together with 133027619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133027627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66513810 + 66513811.

It is an arithmetic number, because the mean of its divisors is an integer number (66513811).

Almost surely, 2^133027621 is an apocalyptic number.

It is an amenable number.

133027621 is a deficient number, since it is larger than the sum of its proper divisors (1).

133027621 is an equidigital number, since it uses as much as digits as its factorization.

133027621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 133027621 is about 11533.7600547263. The cubic root of 133027621 is about 510.4822057268.

Adding to 133027621 its reverse (126720331), we get a palindrome (259747952).

The spelling of 133027621 in words is "one hundred thirty-three million, twenty-seven thousand, six hundred twenty-one".