12136517 has 2 divisors, whose sum is σ = 12136518. Its totient is φ = 12136516.

The previous prime is 12136513. The next prime is 12136547. The reversal of 12136517 is 71563121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10201636 + 1934881 = 3194^2 + 1391^2 .

It is a cyclic number.

It is not a de Polignac number, because 12136517 - 2² = 12136513 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12136513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6068258 + 6068259.

It is an arithmetic number, because the mean of its divisors is an integer number (6068259).

Almost surely, 2^12136517 is an apocalyptic number.

It is an amenable number.

12136517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12136517 is an equidigital number, since it uses as much as digits as its factorization.

12136517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 12136517 is about 3483.7504216003. The cubic root of 12136517 is about 229.8077599704.

Adding to 12136517 its reverse (71563121), we get a palindrome (83699638).

The spelling of 12136517 in words is "twelve million, one hundred thirty-six thousand, five hundred seventeen".