2543947 has 8 divisors (see below), whose sum is σ = 2962656. Its totient is φ = 2139072.

The previous prime is 2543939. The next prime is 2543963. The reversal of 2543947 is 7493452.

2543947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2543947 - 2³ = 2543939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2543917) 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 7 ways as a sum of consecutive naturals, for example, 3058 + ... + 3799.

It is an arithmetic number, because the mean of its divisors is an integer number (370332).

2^2543947 is an apocalyptic number.

2543947 is a deficient number, since it is larger than the sum of its proper divisors (418709).

2543947 is an equidigital number, since it uses as much as digits as its factorization.

2543947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6917.

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

The square root of 2543947 is about 1594.9755484019. The cubic root of 2543947 is about 136.5115359212.

The spelling of 2543947 in words is "two million, five hundred forty-three thousand, nine hundred forty-seven".