2568457 has 2 divisors, whose sum is σ = 2568458. Its totient is φ = 2568456.

The previous prime is 2568431. The next prime is 2568469. The reversal of 2568457 is 7548652.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2483776 + 84681 = 1576^2 + 291^2 .

It is a cyclic number.

It is not a de Polignac number, because 2568457 - 2¹⁹ = 2044169 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁰ + 5⁶ + 6⁸ + 8⁵ + 4⁴ + 5⁶ + 7⁷ .

It is not a weakly prime, because it can be changed into another prime (2568407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284228 + 1284229.

It is an arithmetic number, because the mean of its divisors is an integer number (1284229).

2^2568457 is an apocalyptic number.

It is an amenable number.

2568457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2568457 is an equidigital number, since it uses as much as digits as its factorization.

2568457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 37.

The square root of 2568457 is about 1602.6406334547. The cubic root of 2568457 is about 136.9485483529.

It can be divided in two parts, 2568 and 457, that added together give a square (3025 = 55²).

The spelling of 2568457 in words is "two million, five hundred sixty-eight thousand, four hundred fifty-seven".