12603161 has 2 divisors, whose sum is σ = 12603162. Its totient is φ = 12603160.

The previous prime is 12603133. The next prime is 12603179. The reversal of 12603161 is 16130621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11055625 + 1547536 = 3325^2 + 1244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12603161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12603121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6301580 + 6301581.

It is an arithmetic number, because the mean of its divisors is an integer number (6301581).

Almost surely, 2^12603161 is an apocalyptic number.

It is an amenable number.

12603161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12603161 is an equidigital number, since it uses as much as digits as its factorization.

12603161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12603161 is about 3550.0930973708. The cubic root of 12603161 is about 232.7161346238.

Adding to 12603161 its reverse (16130621), we get a palindrome (28733782).

The spelling of 12603161 in words is "twelve million, six hundred three thousand, one hundred sixty-one".