9117257 has 2 divisors, whose sum is σ = 9117258. Its totient is φ = 9117256.

The previous prime is 9117221. The next prime is 9117263. The reversal of 9117257 is 7527119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4910656 + 4206601 = 2216^2 + 2051^2 .

It is a cyclic number.

It is not a de Polignac number, because 9117257 - 2¹² = 9113161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9117557) 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 as a sum of consecutive naturals, namely, 4558628 + 4558629.

It is an arithmetic number, because the mean of its divisors is an integer number (4558629).

Almost surely, 2^9117257 is an apocalyptic number.

It is an amenable number.

9117257 is a deficient number, since it is larger than the sum of its proper divisors (1).

9117257 is an equidigital number, since it uses as much as digits as its factorization.

9117257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4410, while the sum is 32.

The square root of 9117257 is about 3019.4795909229. The cubic root of 9117257 is about 208.9078369316.

The spelling of 9117257 in words is "nine million, one hundred seventeen thousand, two hundred fifty-seven".