2740543 has 4 divisors (see below), whose sum is σ = 2951368. Its totient is φ = 2529720.

The previous prime is 2740537. The next prime is 2740559. The reversal of 2740543 is 3450472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2740543 - 2⁵ = 2740511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740513) 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 in 3 ways as a sum of consecutive naturals, for example, 105393 + ... + 105418.

It is an arithmetic number, because the mean of its divisors is an integer number (737842).

2^2740543 is an apocalyptic number.

2740543 is a deficient number, since it is larger than the sum of its proper divisors (210825).

2740543 is a wasteful number, since it uses less digits than its factorization.

2740543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210824.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 2740543 is about 1655.4585467477. The cubic root of 2740543 is about 139.9411827760.

The spelling of 2740543 in words is "two million, seven hundred forty thousand, five hundred forty-three".