2560279 has 2 divisors, whose sum is σ = 2560280. Its totient is φ = 2560278.

The previous prime is 2560273. The next prime is 2560297. The reversal of 2560279 is 9720652.

Together with next prime (2560297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2560279 - 2⁵ = 2560247 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 5⁹ + 6⁵ + 0 + 2¹⁵ + 7⁴ + 9⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 2560279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2560273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280139 + 1280140.

It is an arithmetic number, because the mean of its divisors is an integer number (1280140).

2^2560279 is an apocalyptic number.

2560279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560279 is an equidigital number, since it uses as much as digits as its factorization.

2560279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 2560279 is about 1600.0871851246. The cubic root of 2560279 is about 136.8030451712.

It can be divided in two parts, 256027 and 9, that added together give a square (256036 = 506²).

The spelling of 2560279 in words is "two million, five hundred sixty thousand, two hundred seventy-nine".