2545889 has 2 divisors, whose sum is σ = 2545890. Its totient is φ = 2545888.

The previous prime is 2545883. The next prime is 2545891. The reversal of 2545889 is 9885452.

2545889 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., 2505889 + 40000 = 1583^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545889 - 2⁸ = 2545633 is a prime.

Together with 2545891, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545883) 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, 1272944 + 1272945.

It is an arithmetic number, because the mean of its divisors is an integer number (1272945).

2^2545889 is an apocalyptic number.

It is an amenable number.

2545889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545889 is an equidigital number, since it uses as much as digits as its factorization.

2545889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 41.

The square root of 2545889 is about 1595.5842190245. The cubic root of 2545889 is about 136.5462638424.

The spelling of 2545889 in words is "two million, five hundred forty-five thousand, eight hundred eighty-nine".