2549443 has 4 divisors (see below), whose sum is σ = 2745568. Its totient is φ = 2353320.

The previous prime is 2549431. The next prime is 2549447. The reversal of 2549443 is 3449452.

It is a happy number.

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 2549443 - 2¹³ = 2541251 is a prime.

It is a super-2 number, since 2×2549443² = 12999319220498, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2549447) 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, 98043 + ... + 98068.

It is an arithmetic number, because the mean of its divisors is an integer number (686392).

2^2549443 is an apocalyptic number.

2549443 is a deficient number, since it is larger than the sum of its proper divisors (196125).

2549443 is a wasteful number, since it uses less digits than its factorization.

2549443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196124.

The product of its digits is 17280, while the sum is 31.

The square root of 2549443 is about 1596.6975292772. The cubic root of 2549443 is about 136.6097727360.

Subtracting 2549443 from its reverse (3449452), we obtain a palindrome (900009).

It can be divided in two parts, 2549 and 443, that added together give a palindrome (2992).

The spelling of 2549443 in words is "two million, five hundred forty-nine thousand, four hundred forty-three".