13382561 has 2 divisors, whose sum is σ = 13382562. Its totient is φ = 13382560.

The previous prime is 13382549. The next prime is 13382563. The reversal of 13382561 is 16528331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8179600 + 5202961 = 2860^2 + 2281^2 .

It is an emirp because it is prime and its reverse (16528331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13382561 - 2⁶ = 13382497 is a prime.

Together with 13382563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13382563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6691280 + 6691281.

It is an arithmetic number, because the mean of its divisors is an integer number (6691281).

Almost surely, 2^13382561 is an apocalyptic number.

It is an amenable number.

13382561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13382561 is an equidigital number, since it uses as much as digits as its factorization.

13382561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 13382561 is about 3658.2182821696. The cubic root of 13382561 is about 237.4176911456.

The spelling of 13382561 in words is "thirteen million, three hundred eighty-two thousand, five hundred sixty-one".