12168551 has 2 divisors, whose sum is σ = 12168552. Its totient is φ = 12168550.

The previous prime is 12168517. The next prime is 12168571. The reversal of 12168551 is 15586121.

It is a strong prime.

It is an emirp because it is prime and its reverse (15586121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12168551 - 2¹⁴ = 12152167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12168511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6084275 + 6084276.

It is an arithmetic number, because the mean of its divisors is an integer number (6084276).

Almost surely, 2^12168551 is an apocalyptic number.

12168551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12168551 is an equidigital number, since it uses as much as digits as its factorization.

12168551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 29.

The square root of 12168551 is about 3488.3450230733. The cubic root of 12168551 is about 230.0097727416.

The spelling of 12168551 in words is "twelve million, one hundred sixty-eight thousand, five hundred fifty-one".