2540563 has 2 divisors, whose sum is σ = 2540564. Its totient is φ = 2540562.

The previous prime is 2540539. The next prime is 2540567. The reversal of 2540563 is 3650452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540563 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 5³ + 4⁵ + 0 + 5⁹ + 6⁶ + 3¹² .

2540563 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2540567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270281 + 1270282.

It is an arithmetic number, because the mean of its divisors is an integer number (1270282).

2^2540563 is an apocalyptic number.

2540563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540563 is an equidigital number, since it uses as much as digits as its factorization.

2540563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2540563 is about 1593.9143640736. The cubic root of 2540563 is about 136.4509791011.

The spelling of 2540563 in words is "two million, five hundred forty thousand, five hundred sixty-three".