450505221 has 8 divisors (see below), whose sum is σ = 600921984. Its totient is φ = 300212640.

The previous prime is 450505217. The next prime is 450505249. The reversal of 450505221 is 122505054.

It is a happy number.

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

It is not a de Polignac number, because 450505221 - 2² = 450505217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 450505191 and 450505200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450505271) 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, 22221 + ... + 37346.

It is an arithmetic number, because the mean of its divisors is an integer number (75115248).

Almost surely, 2^450505221 is an apocalyptic number.

It is an amenable number.

450505221 is a deficient number, since it is larger than the sum of its proper divisors (150416763).

450505221 is a wasteful number, since it uses less digits than its factorization.

450505221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62091.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 450505221 is about 21225.1082682751. The cubic root of 450505221 is about 766.5961070749.

The spelling of 450505221 in words is "four hundred fifty million, five hundred five thousand, two hundred twenty-one".