12380561 has 2 divisors, whose sum is σ = 12380562. Its totient is φ = 12380560.

The previous prime is 12380531. The next prime is 12380567. The reversal of 12380561 is 16508321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8300161 + 4080400 = 2881^2 + 2020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12380561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12380561.

It is not a weakly prime, because it can be changed into another prime (12380567) 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, 6190280 + 6190281.

It is an arithmetic number, because the mean of its divisors is an integer number (6190281).

Almost surely, 2^12380561 is an apocalyptic number.

It is an amenable number.

12380561 is a deficient number, since it is larger than the sum of its proper divisors (1).

12380561 is an equidigital number, since it uses as much as digits as its factorization.

12380561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12380561 is about 3518.6021372130. The cubic root of 12380561 is about 231.3378924726.

Adding to 12380561 its reverse (16508321), we get a palindrome (28888882).

The spelling of 12380561 in words is "twelve million, three hundred eighty thousand, five hundred sixty-one".