8321273 has 2 divisors, whose sum is σ = 8321274. Its totient is φ = 8321272.

The previous prime is 8321249. The next prime is 8321281. The reversal of 8321273 is 3721238.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6210064 + 2111209 = 2492^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 8321273 - 2¹⁴ = 8304889 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8321213) by changing a digit.

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 as a sum of consecutive naturals, namely, 4160636 + 4160637.

It is an arithmetic number, because the mean of its divisors is an integer number (4160637).

Almost surely, 2^8321273 is an apocalyptic number.

It is an amenable number.

8321273 is a deficient number, since it is larger than the sum of its proper divisors (1).

8321273 is an equidigital number, since it uses as much as digits as its factorization.

8321273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 8321273 is about 2884.6616786029. The cubic root of 8321273 is about 202.6422147877.

The spelling of 8321273 in words is "eight million, three hundred twenty-one thousand, two hundred seventy-three".