11712517 has 2 divisors, whose sum is σ = 11712518. Its totient is φ = 11712516.

The previous prime is 11712499. The next prime is 11712539. The reversal of 11712517 is 71521711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11655396 + 57121 = 3414^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 11712517 - 2¹¹ = 11710469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11712491 and 11712500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11712577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5856258 + 5856259.

It is an arithmetic number, because the mean of its divisors is an integer number (5856259).

Almost surely, 2^11712517 is an apocalyptic number.

It is an amenable number.

11712517 is a deficient number, since it is larger than the sum of its proper divisors (1).

11712517 is an equidigital number, since it uses as much as digits as its factorization.

11712517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 490, while the sum is 25.

The square root of 11712517 is about 3422.3554753999. The cubic root of 11712517 is about 227.0997963394.

The spelling of 11712517 in words is "eleven million, seven hundred twelve thousand, five hundred seventeen".