320522164 has 12 divisors (see below), whose sum is σ = 571497444. Its totient is φ = 157237184.

The previous prime is 320522159. The next prime is 320522173. The reversal of 320522164 is 461225023.

It can be written as a sum of positive squares in 2 ways, for example, as 210482064 + 110040100 = 14508^2 + 10490^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755737 + ... + 756160.

It is an arithmetic number, because the mean of its divisors is an integer number (47624787).

Almost surely, 2^320522164 is an apocalyptic number.

It is an amenable number.

320522164 is a deficient number, since it is larger than the sum of its proper divisors (250975280).

320522164 is a wasteful number, since it uses less digits than its factorization.

320522164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511954 (or 1511952 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 320522164 is about 17903.1327984797. The cubic root of 320522164 is about 684.3622131122.

Adding to 320522164 its reverse (461225023), we get a palindrome (781747187).

The spelling of 320522164 in words is "three hundred twenty million, five hundred twenty-two thousand, one hundred sixty-four".