8317121 has 2 divisors, whose sum is σ = 8317122. Its totient is φ = 8317120.

The previous prime is 8317093. The next prime is 8317157. The reversal of 8317121 is 1217138.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 2676496 = 2375^2 + 1636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8317121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8314121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4158560 + 4158561.

It is an arithmetic number, because the mean of its divisors is an integer number (4158561).

Almost surely, 2^8317121 is an apocalyptic number.

It is an amenable number.

8317121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8317121 is an equidigital number, since it uses as much as digits as its factorization.

8317121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 23.

The square root of 8317121 is about 2883.9419203583. The cubic root of 8317121 is about 202.6085055843.

The spelling of 8317121 in words is "eight million, three hundred seventeen thousand, one hundred twenty-one".