2523641 has 2 divisors, whose sum is σ = 2523642. Its totient is φ = 2523640.

The previous prime is 2523593. The next prime is 2523643. The reversal of 2523641 is 1463252.

2523641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 674041 = 1360^2 + 821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2523641 is a prime.

Together with 2523643, 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 (2523643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261820 + 1261821.

It is an arithmetic number, because the mean of its divisors is an integer number (1261821).

2^2523641 is an apocalyptic number.

It is an amenable number.

2523641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523641 is an equidigital number, since it uses as much as digits as its factorization.

2523641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 2523641 is about 1588.5971799043. The cubic root of 2523641 is about 136.1473496672.

Adding to 2523641 its reverse (1463252), we get a palindrome (3986893).

The spelling of 2523641 in words is "two million, five hundred twenty-three thousand, six hundred forty-one".