2559421 has 2 divisors, whose sum is σ = 2559422. Its totient is φ = 2559420.

The previous prime is 2559409. The next prime is 2559437. The reversal of 2559421 is 1249552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2295225 + 264196 = 1515^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2559421 - 2⁹ = 2558909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2559421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2559461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279710 + 1279711.

It is an arithmetic number, because the mean of its divisors is an integer number (1279711).

2^2559421 is an apocalyptic number.

It is an amenable number.

2559421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2559421 is an equidigital number, since it uses as much as digits as its factorization.

2559421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The square root of 2559421 is about 1599.8190522681. The cubic root of 2559421 is about 136.7877616641.

The spelling of 2559421 in words is "two million, five hundred fifty-nine thousand, four hundred twenty-one".