2543507 has 2 divisors, whose sum is σ = 2543508. Its totient is φ = 2543506.

The previous prime is 2543479. The next prime is 2543509. The reversal of 2543507 is 7053452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2543507 - 2¹⁰ = 2542483 is a prime.

Together with 2543509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2543509) 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, 1271753 + 1271754.

It is an arithmetic number, because the mean of its divisors is an integer number (1271754).

2^2543507 is an apocalyptic number.

2543507 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543507 is an equidigital number, since it uses as much as digits as its factorization.

2543507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 2543507 is about 1594.8376092882. The cubic root of 2543507 is about 136.5036651415.

Adding to 2543507 its reverse (7053452), we get a palindrome (9596959).

The spelling of 2543507 in words is "two million, five hundred forty-three thousand, five hundred seven".