2556079 has 2 divisors, whose sum is σ = 2556080. Its totient is φ = 2556078.

The previous prime is 2556067. The next prime is 2556091. The reversal of 2556079 is 9706552.

It is a balanced prime because it is at equal distance from previous prime (2556067) and next prime (2556091).

It is a cyclic number.

It is not a de Polignac number, because 2556079 - 2⁷ = 2555951 is a prime.

2556079 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2556019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278039 + 1278040.

It is an arithmetic number, because the mean of its divisors is an integer number (1278040).

2^2556079 is an apocalyptic number.

2556079 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556079 is an equidigital number, since it uses as much as digits as its factorization.

2556079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 2556079 is about 1598.7742179557. The cubic root of 2556079 is about 136.7281982162.

It can be divided in two parts, 25 and 56079, that multiplied together give a triangular number (1401975 = T₁₆₇₄).

The spelling of 2556079 in words is "two million, five hundred fifty-six thousand, seventy-nine".