2541689 has 2 divisors, whose sum is σ = 2541690. Its totient is φ = 2541688.

The previous prime is 2541683. The next prime is 2541697. The reversal of 2541689 is 9861452.

2541689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2534464 + 7225 = 1592^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541689 - 2⁸ = 2541433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2541683) 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, 1270844 + 1270845.

It is an arithmetic number, because the mean of its divisors is an integer number (1270845).

2^2541689 is an apocalyptic number.

It is an amenable number.

2541689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541689 is an equidigital number, since it uses as much as digits as its factorization.

2541689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 2541689 is about 1594.2675434192. The cubic root of 2541689 is about 136.4711348841.

It can be divided in two parts, 25 and 41689, that added together give a palindrome (41714).

The spelling of 2541689 in words is "two million, five hundred forty-one thousand, six hundred eighty-nine".