2456543 has 4 divisors (see below), whose sum is σ = 2459688. Its totient is φ = 2453400.

The previous prime is 2456539. The next prime is 2456557. The reversal of 2456543 is 3456542.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2456543 - 2² = 2456539 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2456243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605 + ... + 2297.

It is an arithmetic number, because the mean of its divisors is an integer number (614922).

2^2456543 is an apocalyptic number.

2456543 is a deficient number, since it is larger than the sum of its proper divisors (3145).

2456543 is a wasteful number, since it uses less digits than its factorization.

2456543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144.

The product of its digits is 14400, while the sum is 29.

The square root of 2456543 is about 1567.3362753411. The cubic root of 2456543 is about 134.9298767050.

Subtracting 2456543 from its reverse (3456542), we obtain a palindrome (999999).

The spelling of 2456543 in words is "two million, four hundred fifty-six thousand, five hundred forty-three".