260549 has 2 divisors, whose sum is σ = 260550. Its totient is φ = 260548.

The previous prime is 260543. The next prime is 260551. The reversal of 260549 is 945062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240100 + 20449 = 490^2 + 143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260549 is a prime.

Together with 260551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130274 + 130275.

It is an arithmetic number, because the mean of its divisors is an integer number (130275).

2²⁶⁰⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

260549 is a deficient number, since it is larger than the sum of its proper divisors (1).

260549 is an equidigital number, since it uses as much as digits as its factorization.

260549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 260549 is about 510.4400062691. The cubic root of 260549 is about 63.8699344178.

The spelling of 260549 in words is "two hundred sixty thousand, five hundred forty-nine".