450134521 has 2 divisors, whose sum is σ = 450134522. Its totient is φ = 450134520.

The previous prime is 450134519. The next prime is 450134527. The reversal of 450134521 is 125431054.

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., 446730496 + 3404025 = 21136^2 + 1845^2 .

It is a cyclic number.

It is not a de Polignac number, because 450134521 - 2¹ = 450134519 is a prime.

Together with 450134519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (450134527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225067260 + 225067261.

It is an arithmetic number, because the mean of its divisors is an integer number (225067261).

Almost surely, 2^450134521 is an apocalyptic number.

It is an amenable number.

450134521 is a deficient number, since it is larger than the sum of its proper divisors (1).

450134521 is an equidigital number, since it uses as much as digits as its factorization.

450134521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 450134521 is about 21216.3738890509. The cubic root of 450134521 is about 766.3857838313.

Adding to 450134521 its reverse (125431054), we get a palindrome (575565575).

The spelling of 450134521 in words is "four hundred fifty million, one hundred thirty-four thousand, five hundred twenty-one".