450315665 has 4 divisors (see below), whose sum is σ = 540378804. Its totient is φ = 360252528.

The previous prime is 450315661. The next prime is 450315731. The reversal of 450315665 is 566513054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566513054 = 2 ⋅283256527.

It can be written as a sum of positive squares in 2 ways, for example, as 46144849 + 404170816 = 6793^2 + 20104^2 .

It is a cyclic number.

It is not a de Polignac number, because 450315665 - 2² = 450315661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450315661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45031562 + ... + 45031571.

It is an arithmetic number, because the mean of its divisors is an integer number (135094701).

Almost surely, 2^450315665 is an apocalyptic number.

It is an amenable number.

450315665 is a deficient number, since it is larger than the sum of its proper divisors (90063139).

450315665 is an equidigital number, since it uses as much as digits as its factorization.

450315665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90063138.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 450315665 is about 21220.6424266562. The cubic root of 450315665 is about 766.4885735248.

The spelling of 450315665 in words is "four hundred fifty million, three hundred fifteen thousand, six hundred sixty-five".