12554161 has 2 divisors, whose sum is σ = 12554162. Its totient is φ = 12554160.

The previous prime is 12554147. The next prime is 12554167. The reversal of 12554161 is 16145521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10523536 + 2030625 = 3244^2 + 1425^2 .

It is a cyclic number.

It is not a de Polignac number, because 12554161 - 2⁹ = 12553649 is a prime.

It is not a weakly prime, because it can be changed into another prime (12554167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277080 + 6277081.

It is an arithmetic number, because the mean of its divisors is an integer number (6277081).

Almost surely, 2^12554161 is an apocalyptic number.

It is an amenable number.

12554161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12554161 is an equidigital number, since it uses as much as digits as its factorization.

12554161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 12554161 is about 3543.1851489867. The cubic root of 12554161 is about 232.4141495192.

Adding to 12554161 its reverse (16145521), we get a palindrome (28699682).

The spelling of 12554161 in words is "twelve million, five hundred fifty-four thousand, one hundred sixty-one".