13887541 has 2 divisors, whose sum is σ = 13887542. Its totient is φ = 13887540.

The previous prime is 13887539. The next prime is 13887547. The reversal of 13887541 is 14578831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13616100 + 271441 = 3690^2 + 521^2 .

It is an emirp because it is prime and its reverse (14578831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13887541 - 2¹ = 13887539 is a prime.

Together with 13887539, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13887541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13887547) 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, 6943770 + 6943771.

It is an arithmetic number, because the mean of its divisors is an integer number (6943771).

Almost surely, 2^13887541 is an apocalyptic number.

It is an amenable number.

13887541 is a deficient number, since it is larger than the sum of its proper divisors (1).

13887541 is an equidigital number, since it uses as much as digits as its factorization.

13887541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 13887541 is about 3726.5991198410. The cubic root of 13887541 is about 240.3671521643.

The spelling of 13887541 in words is "thirteen million, eight hundred eighty-seven thousand, five hundred forty-one".