12541 has 2 divisors, whose sum is σ = 12542.
Its totient is φ = 12540.
The previous prime is 12539. The next prime is 12547. The reversal of 12541 is 14521.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 12100 + 441 = 110^2 + 21^2
It is a cyclic number.
It is not a de Polignac number, because 12541 - 21 = 12539 is a prime.
Together with 12539, it forms a pair of twin primes.
It is an alternating number because its digits alternate between odd and even.
It is a nialpdrome in base 12.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12547) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6270 + 6271.
It is an arithmetic number, because the mean of its divisors is an integer number (6271).
212541 is an apocalyptic number.
It is an amenable number.
12541 is a deficient number, since it is larger than the sum of its proper divisors (1).
12541 is an equidigital number, since it uses as much as digits as its factorization.
12541 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 40, while the sum is 13.
The square root of 12541 is about 111.9866063420.
The cubic root of 12541 is about 23.2332904952.
The spelling of 12541 in words is "twelve thousand, five hundred forty-one".