12013517 has 2 divisors, whose sum is σ = 12013518. Its totient is φ = 12013516.

The previous prime is 12013501. The next prime is 12013531. The reversal of 12013517 is 71531021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12013156 + 361 = 3466^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013517 - 2⁴ = 12013501 is a prime.

It is a super-4 number, since 4×12013517⁴ (a number of 29 digits) contains 4444 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12013117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006758 + 6006759.

It is an arithmetic number, because the mean of its divisors is an integer number (6006759).

Almost surely, 2^12013517 is an apocalyptic number.

It is an amenable number.

12013517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013517 is an equidigital number, since it uses as much as digits as its factorization.

12013517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 12013517 is about 3466.0520769313. The cubic root of 12013517 is about 229.0287779347.

Adding to 12013517 its reverse (71531021), we get a palindrome (83544538).

The spelling of 12013517 in words is "twelve million, thirteen thousand, five hundred seventeen".