28541 has 2 divisors, whose sum is σ = 28542. Its totient is φ = 28540.

The previous prime is 28537. The next prime is 28547. The reversal of 28541 is 14582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21316 + 7225 = 146^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 28541 - 2² = 28537 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14270 + 14271.

It is an arithmetic number, because the mean of its divisors is an integer number (14271).

2²⁸⁵⁴¹ is an apocalyptic number.

It is an amenable number.

28541 is a deficient number, since it is larger than the sum of its proper divisors (1).

28541 is an equidigital number, since it uses as much as digits as its factorization.

28541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 20.

The square root of 28541 is about 168.9408180399. The cubic root of 28541 is about 30.5602142881.

Adding to 28541 its sum of digits (20), we get a 4-th power (28561 = 13⁴).

The spelling of 28541 in words is "twenty-eight thousand, five hundred forty-one".