2543983 has 4 divisors (see below), whose sum is σ = 2739688. Its totient is φ = 2348280.

The previous prime is 2543971. The next prime is 2544011. The reversal of 2543983 is 3893452.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2543983 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 (2543963) 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, 97833 + ... + 97858.

It is an arithmetic number, because the mean of its divisors is an integer number (684922).

2^2543983 is an apocalyptic number.

2543983 is a deficient number, since it is larger than the sum of its proper divisors (195705).

2543983 is a wasteful number, since it uses less digits than its factorization.

2543983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195704.

The product of its digits is 25920, while the sum is 34.

The square root of 2543983 is about 1594.9868338015. The cubic root of 2543983 is about 136.5121798539.

The spelling of 2543983 in words is "two million, five hundred forty-three thousand, nine hundred eighty-three".