2546891 has 2 divisors, whose sum is σ = 2546892. Its totient is φ = 2546890.

The previous prime is 2546849. The next prime is 2546899. The reversal of 2546891 is 1986452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2546891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2546899) 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, 1273445 + 1273446.

It is an arithmetic number, because the mean of its divisors is an integer number (1273446).

2^2546891 is an apocalyptic number.

2546891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2546891 is an equidigital number, since it uses as much as digits as its factorization.

2546891 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 2546891 is about 1595.8981797095. The cubic root of 2546891 is about 136.5641752557.

The spelling of 2546891 in words is "two million, five hundred forty-six thousand, eight hundred ninety-one".