13845541 has 2 divisors, whose sum is σ = 13845542. Its totient is φ = 13845540.

The previous prime is 13845539. The next prime is 13845571. The reversal of 13845541 is 14554831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13616100 + 229441 = 3690^2 + 479^2 .

It is an emirp because it is prime and its reverse (14554831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13845541 - 2¹ = 13845539 is a prime.

Together with 13845539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13845571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6922770 + 6922771.

It is an arithmetic number, because the mean of its divisors is an integer number (6922771).

Almost surely, 2^13845541 is an apocalyptic number.

It is an amenable number.

13845541 is a deficient number, since it is larger than the sum of its proper divisors (1).

13845541 is an equidigital number, since it uses as much as digits as its factorization.

13845541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

The square root of 13845541 is about 3720.9596880375. The cubic root of 13845541 is about 240.1245938718.

The spelling of 13845541 in words is "thirteen million, eight hundred forty-five thousand, five hundred forty-one".