13232561 has 2 divisors, whose sum is σ = 13232562. Its totient is φ = 13232560.

The previous prime is 13232543. The next prime is 13232573. The reversal of 13232561 is 16523231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13184161 + 48400 = 3631^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 13232561 - 2¹⁸ = 12970417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13232501) 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, 6616280 + 6616281.

It is an arithmetic number, because the mean of its divisors is an integer number (6616281).

Almost surely, 2^13232561 is an apocalyptic number.

It is an amenable number.

13232561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13232561 is an equidigital number, since it uses as much as digits as its factorization.

13232561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 13232561 is about 3637.6587250593. The cubic root of 13232561 is about 236.5273148653.

Adding to 13232561 its reverse (16523231), we get a palindrome (29755792).

The spelling of 13232561 in words is "thirteen million, two hundred thirty-two thousand, five hundred sixty-one".