2560457 has 2 divisors, whose sum is σ = 2560458. Its totient is φ = 2560456.

The previous prime is 2560433. The next prime is 2560471. The reversal of 2560457 is 7540652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2468041 + 92416 = 1571^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 2560457 - 2¹⁸ = 2298313 is a prime.

It is not a weakly prime, because it can be changed into another prime (2560417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280228 + 1280229.

It is an arithmetic number, because the mean of its divisors is an integer number (1280229).

2^2560457 is an apocalyptic number.

It is an amenable number.

2560457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560457 is an equidigital number, since it uses as much as digits as its factorization.

2560457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 2560457 is about 1600.1428061270. The cubic root of 2560457 is about 136.8062154478.

The spelling of 2560457 in words is "two million, five hundred sixty thousand, four hundred fifty-seven".