450454145 has 4 divisors (see below), whose sum is σ = 540544980. Its totient is φ = 360363312.

The previous prime is 450454097. The next prime is 450454159. The reversal of 450454145 is 541454054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158180929 + 292273216 = 12577^2 + 17096^2 .

It is a cyclic number.

It is not a de Polignac number, because 450454145 - 2²⁰ = 449405569 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 45045410 + ... + 45045419.

It is an arithmetic number, because the mean of its divisors is an integer number (135136245).

Almost surely, 2^450454145 is an apocalyptic number.

It is an amenable number.

450454145 is a deficient number, since it is larger than the sum of its proper divisors (90090835).

450454145 is an equidigital number, since it uses as much as digits as its factorization.

450454145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90090834.

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 450454145 is about 21223.9050365384. The cubic root of 450454145 is about 766.5671350521.

Subtracting 450454145 from its reverse (541454054), we obtain a palindrome (90999909).

The spelling of 450454145 in words is "four hundred fifty million, four hundred fifty-four thousand, one hundred forty-five".