450644563 has 2 divisors, whose sum is σ = 450644564. Its totient is φ = 450644562.

The previous prime is 450644503. The next prime is 450644573. The reversal of 450644563 is 365446054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 450644563 - 2¹⁷ = 450513491 is a prime.

It is a super-2 number, since 2×450644563² = 406161044322921938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (450644503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225322281 + 225322282.

It is an arithmetic number, because the mean of its divisors is an integer number (225322282).

Almost surely, 2^450644563 is an apocalyptic number.

450644563 is a deficient number, since it is larger than the sum of its proper divisors (1).

450644563 is an equidigital number, since it uses as much as digits as its factorization.

450644563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 450644563 is about 21228.3904948067. The cubic root of 450644563 is about 766.6751354032.

The spelling of 450644563 in words is "four hundred fifty million, six hundred forty-four thousand, five hundred sixty-three".