2544539 has 2 divisors, whose sum is σ = 2544540. Its totient is φ = 2544538.

The previous prime is 2544523. The next prime is 2544571. The reversal of 2544539 is 9354452.

It is a happy number.

It is an a-pointer prime, because the next prime (2544571) can be obtained adding 2544539 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2544539 - 2⁴ = 2544523 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2544239) 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, 1272269 + 1272270.

It is an arithmetic number, because the mean of its divisors is an integer number (1272270).

2^2544539 is an apocalyptic number.

2544539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2544539 is an equidigital number, since it uses as much as digits as its factorization.

2544539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 32.

The square root of 2544539 is about 1595.1611203888. The cubic root of 2544539 is about 136.5221242656.

The spelling of 2544539 in words is "two million, five hundred forty-four thousand, five hundred thirty-nine".