320450563 has 4 divisors (see below), whose sum is σ = 320847480. Its totient is φ = 320053648.

The previous prime is 320450531. The next prime is 320450567. The reversal of 320450563 is 365054023.

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

It is a cyclic number.

It is not a de Polignac number, because 320450563 - 2⁵ = 320450531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320450567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197245 + ... + 198862.

It is an arithmetic number, because the mean of its divisors is an integer number (80211870).

Almost surely, 2^320450563 is an apocalyptic number.

320450563 is a deficient number, since it is larger than the sum of its proper divisors (396917).

320450563 is an equidigital number, since it uses as much as digits as its factorization.

320450563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396916.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 320450563 is about 17901.1330088349. The cubic root of 320450563 is about 684.3112497431.

The spelling of 320450563 in words is "three hundred twenty million, four hundred fifty thousand, five hundred sixty-three".