450020345 has 16 divisors (see below), whose sum is σ = 577695888. Its totient is φ = 335339520.

The previous prime is 450020321. The next prime is 450020357. The reversal of 450020345 is 543020054.

It can be written as a sum of positive squares in 8 ways, for example, as 31449664 + 418570681 = 5608^2 + 20459^2 .

It is not a de Polignac number, because 450020345 - 2⁶ = 450020281 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 450020345.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19046 + ... + 35535.

It is an arithmetic number, because the mean of its divisors is an integer number (36105993).

Almost surely, 2^450020345 is an apocalyptic number.

It is an amenable number.

450020345 is a deficient number, since it is larger than the sum of its proper divisors (127675543).

450020345 is a wasteful number, since it uses less digits than its factorization.

450020345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54700.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 450020345 is about 21213.6829664252. The cubic root of 450020345 is about 766.3209807865.

Adding to 450020345 its reverse (543020054), we get a palindrome (993040399).

The spelling of 450020345 in words is "four hundred fifty million, twenty thousand, three hundred forty-five".