452664521 has 2 divisors, whose sum is σ = 452664522. Its totient is φ = 452664520.

The previous prime is 452664479. The next prime is 452664523. The reversal of 452664521 is 125466254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274068025 + 178596496 = 16555^2 + 13364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-452664521 is a prime.

Together with 452664523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (452664523) 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, 226332260 + 226332261.

It is an arithmetic number, because the mean of its divisors is an integer number (226332261).

Almost surely, 2^452664521 is an apocalyptic number.

It is an amenable number.

452664521 is a deficient number, since it is larger than the sum of its proper divisors (1).

452664521 is an equidigital number, since it uses as much as digits as its factorization.

452664521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

The square root of 452664521 is about 21275.9141049216. The cubic root of 452664521 is about 767.8189366499.

The spelling of 452664521 in words is "four hundred fifty-two million, six hundred sixty-four thousand, five hundred twenty-one".