2543453 has 4 divisors (see below), whose sum is σ = 2774688. Its totient is φ = 2312220.

The previous prime is 2543441. The next prime is 2543459. The reversal of 2543453 is 3543452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2543453 - 2⁶ = 2543389 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 (2543459) 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, 115601 + ... + 115622.

It is an arithmetic number, because the mean of its divisors is an integer number (693672).

2^2543453 is an apocalyptic number.

It is an amenable number.

2543453 is a deficient number, since it is larger than the sum of its proper divisors (231235).

2543453 is a wasteful number, since it uses less digits than its factorization.

2543453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231234.

The product of its digits is 7200, while the sum is 26.

The square root of 2543453 is about 1594.8206795750. The cubic root of 2543453 is about 136.5026991197.

Subtracting 2543453 from its reverse (3543452), we obtain a palindrome (999999).

The spelling of 2543453 in words is "two million, five hundred forty-three thousand, four hundred fifty-three".