450344521 has 4 divisors (see below), whose sum is σ = 491284944. Its totient is φ = 409404100.

The previous prime is 450344513. The next prime is 450344527. The reversal of 450344521 is 125443054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 450344521 - 2³ = 450344513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 450344521.

It is not an unprimeable number, because it can be changed into a prime (450344527) 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 in 3 ways as a sum of consecutive naturals, for example, 20470195 + ... + 20470216.

It is an arithmetic number, because the mean of its divisors is an integer number (122821236).

Almost surely, 2^450344521 is an apocalyptic number.

It is an amenable number.

450344521 is a deficient number, since it is larger than the sum of its proper divisors (40940423).

450344521 is a wasteful number, since it uses less digits than its factorization.

450344521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40940422.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 450344521 is about 21221.3223197802. The cubic root of 450344521 is about 766.5049452418.

Adding to 450344521 its reverse (125443054), we get a palindrome (575787575).

The spelling of 450344521 in words is "four hundred fifty million, three hundred forty-four thousand, five hundred twenty-one".