2560549 has 2 divisors, whose sum is σ = 2560550. Its totient is φ = 2560548.

The previous prime is 2560543. The next prime is 2560583. The reversal of 2560549 is 9450652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1803649 + 756900 = 1343^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2560549 - 2⁵ = 2560517 is a prime.

It is a super-2 number, since 2×2560549² = 13112822362802, which contains 22 as substring.

It is equal to p₁₈₇₁₇₇ and since 2560549 and 187177 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2560549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2560543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280274 + 1280275.

It is an arithmetic number, because the mean of its divisors is an integer number (1280275).

2^2560549 is an apocalyptic number.

It is an amenable number.

2560549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560549 is an equidigital number, since it uses as much as digits as its factorization.

2560549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 2560549 is about 1600.1715533030. The cubic root of 2560549 is about 136.8078539601.

The spelling of 2560549 in words is "two million, five hundred sixty thousand, five hundred forty-nine".