2559857 has 2 divisors, whose sum is σ = 2559858. Its totient is φ = 2559856.

The previous prime is 2559839. The next prime is 2559863. The reversal of 2559857 is 7589552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2085136 + 474721 = 1444^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 2559857 - 2¹⁶ = 2494321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2559827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279928 + 1279929.

It is an arithmetic number, because the mean of its divisors is an integer number (1279929).

2^2559857 is an apocalyptic number.

It is an amenable number.

2559857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2559857 is an equidigital number, since it uses as much as digits as its factorization.

2559857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 41.

The square root of 2559857 is about 1599.9553118759. The cubic root of 2559857 is about 136.7955285350.

The spelling of 2559857 in words is "two million, five hundred fifty-nine thousand, eight hundred fifty-seven".