2547491 has 2 divisors, whose sum is σ = 2547492. Its totient is φ = 2547490.

The previous prime is 2547473. The next prime is 2547529. The reversal of 2547491 is 1947452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2547491 - 2¹⁴ = 2531107 is a prime.

It is not a weakly prime, because it can be changed into another prime (2547431) 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, 1273745 + 1273746.

It is an arithmetic number, because the mean of its divisors is an integer number (1273746).

2^2547491 is an apocalyptic number.

2547491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2547491 is an equidigital number, since it uses as much as digits as its factorization.

2547491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 2547491 is about 1596.0861505570. The cubic root of 2547491 is about 136.5748984043.

The spelling of 2547491 in words is "two million, five hundred forty-seven thousand, four hundred ninety-one".