2547891 has 6 divisors (see below), whose sum is σ = 3680300. Its totient is φ = 1698588.

The previous prime is 2547887. The next prime is 2547893. The reversal of 2547891 is 1987452.

2547891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2547891 - 2² = 2547887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2547893) 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 in 5 ways as a sum of consecutive naturals, for example, 141541 + ... + 141558.

2^2547891 is an apocalyptic number.

2547891 is a deficient number, since it is larger than the sum of its proper divisors (1132409).

2547891 is a wasteful number, since it uses less digits than its factorization.

2547891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283105 (or 283102 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 2547891 is about 1596.2114521579. The cubic root of 2547891 is about 136.5820462346.

The spelling of 2547891 in words is "two million, five hundred forty-seven thousand, eight hundred ninety-one".