450405521 has 8 divisors (see below), whose sum is σ = 462152064. Its totient is φ = 438716880.

The previous prime is 450405509. The next prime is 450405539. The reversal of 450405521 is 125504054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 450405521 - 2¹⁰ = 450404497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450405421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511 + ... + 30051.

It is an arithmetic number, because the mean of its divisors is an integer number (57769008).

Almost surely, 2^450405521 is an apocalyptic number.

It is an amenable number.

450405521 is a deficient number, since it is larger than the sum of its proper divisors (11746543).

450405521 is a wasteful number, since it uses less digits than its factorization.

450405521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28951.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 450405521 is about 21222.7595048335. The cubic root of 450405521 is about 766.5395518511.

Adding to 450405521 its reverse (125504054), we get a palindrome (575909575).

The spelling of 450405521 in words is "four hundred fifty million, four hundred five thousand, five hundred twenty-one".