2456539 has 2 divisors, whose sum is σ = 2456540. Its totient is φ = 2456538.

The previous prime is 2456501. The next prime is 2456557. The reversal of 2456539 is 9356542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2456539 - 2⁷ = 2456411 is a prime.

It is not a weakly prime, because it can be changed into another prime (2456569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228269 + 1228270.

It is an arithmetic number, because the mean of its divisors is an integer number (1228270).

2^2456539 is an apocalyptic number.

2456539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2456539 is an equidigital number, since it uses as much as digits as its factorization.

2456539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 2456539 is about 1567.3349992902. The cubic root of 2456539 is about 134.9298034694.

The spelling of 2456539 in words is "two million, four hundred fifty-six thousand, five hundred thirty-nine".