8160321 has 16 divisors (see below), whose sum is σ = 11854080. Its totient is φ = 4963200.

The previous prime is 8160307. The next prime is 8160337. The reversal of 8160321 is 1230618.

It is not a de Polignac number, because 8160321 - 2¹⁴ = 8143937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8160371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2296 + ... + 4646.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^8160321 is an apocalyptic number.

It is an amenable number.

8160321 is a deficient number, since it is larger than the sum of its proper divisors (3693759).

8160321 is a wasteful number, since it uses less digits than its factorization.

8160321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 8160321 is about 2856.6275571030. The cubic root of 8160321 is about 201.3271817948.

Adding to 8160321 its reverse (1230618), we get a palindrome (9390939).

The spelling of 8160321 in words is "eight million, one hundred sixty thousand, three hundred twenty-one".