12455117 has 2 divisors, whose sum is σ = 12455118. Its totient is φ = 12455116.

The previous prime is 12455111. The next prime is 12455129. The reversal of 12455117 is 71155421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11095561 + 1359556 = 3331^2 + 1166^2 .

It is a cyclic number.

It is not a de Polignac number, because 12455117 - 2¹⁰ = 12454093 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 (12455111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6227558 + 6227559.

It is an arithmetic number, because the mean of its divisors is an integer number (6227559).

Almost surely, 2^12455117 is an apocalyptic number.

It is an amenable number.

12455117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12455117 is an equidigital number, since it uses as much as digits as its factorization.

12455117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1400, while the sum is 26.

The square root of 12455117 is about 3529.1807831280. The cubic root of 12455117 is about 231.8013373149.

It can be divided in two parts, 1245 and 5117, that multiplied together give a triangular number (6370665 = T₃₅₆₉).

The spelling of 12455117 in words is "twelve million, four hundred fifty-five thousand, one hundred seventeen".