11717257 has 2 divisors, whose sum is σ = 11717258. Its totient is φ = 11717256.

The previous prime is 11717239. The next prime is 11717261. The reversal of 11717257 is 75271711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10169721 + 1547536 = 3189^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 11717257 - 2¹⁹ = 11192969 is a prime.

It is a super-2 number, since 2×11717257² = 274588223208098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11717207) 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, 5858628 + 5858629.

It is an arithmetic number, because the mean of its divisors is an integer number (5858629).

Almost surely, 2^11717257 is an apocalyptic number.

It is an amenable number.

11717257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11717257 is an equidigital number, since it uses as much as digits as its factorization.

11717257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3430, while the sum is 31.

The square root of 11717257 is about 3423.0479108537. The cubic root of 11717257 is about 227.1304276106.

Adding to 11717257 its reverse (75271711), we get a palindrome (86988968).

The spelling of 11717257 in words is "eleven million, seven hundred seventeen thousand, two hundred fifty-seven".