2543451 has 4 divisors (see below), whose sum is σ = 3391272. Its totient is φ = 1695632.

The previous prime is 2543441. The next prime is 2543459. The reversal of 2543451 is 1543452.

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 2543451 - 2⁷ = 2543323 is a prime.

It is a D-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, 423906 + ... + 423911.

It is an arithmetic number, because the mean of its divisors is an integer number (847818).

2^2543451 is an apocalyptic number.

2543451 is a deficient number, since it is larger than the sum of its proper divisors (847821).

2543451 is an equidigital number, since it uses as much as digits as its factorization.

2543451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847820.

The product of its digits is 2400, while the sum is 24.

The square root of 2543451 is about 1594.8200525451. The cubic root of 2543451 is about 136.5026633408.

Subtracting from 2543451 its reverse (1543452), we obtain a palindrome (999999).

The spelling of 2543451 in words is "two million, five hundred forty-three thousand, four hundred fifty-one".