2549243 has 4 divisors (see below), whose sum is σ = 2552448. Its totient is φ = 2546040.

The previous prime is 2549237. The next prime is 2549279. The reversal of 2549243 is 3429452.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2549243 - 2¹⁰ = 2548219 is a prime.

It is a d-powerful number, because it can be written as 2 + 5⁹ + 4⁶ + 9 + 2¹⁹ + 4⁸ + 3⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2549203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605 + ... + 2337.

It is an arithmetic number, because the mean of its divisors is an integer number (638112).

2^2549243 is an apocalyptic number.

2549243 is a deficient number, since it is larger than the sum of its proper divisors (3205).

2549243 is a wasteful number, since it uses less digits than its factorization.

2549243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204.

The product of its digits is 8640, while the sum is 29.

The square root of 2549243 is about 1596.6348987793. The cubic root of 2549243 is about 136.6062003649.

The spelling of 2549243 in words is "two million, five hundred forty-nine thousand, two hundred forty-three".