2749543 has 2 divisors, whose sum is σ = 2749544. Its totient is φ = 2749542.

The previous prime is 2749531. The next prime is 2749567. The reversal of 2749543 is 3459472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2749543 - 2⁵ = 2749511 is a prime.

2749543 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2749499 and 2749508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2749573) 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, 1374771 + 1374772.

It is an arithmetic number, because the mean of its divisors is an integer number (1374772).

2^2749543 is an apocalyptic number.

2749543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2749543 is an equidigital number, since it uses as much as digits as its factorization.

2749543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 2749543 is about 1658.1745987682. The cubic root of 2749543 is about 140.0942053030.

The spelling of 2749543 in words is "two million, seven hundred forty-nine thousand, five hundred forty-three".