2543457 has 16 divisors (see below), whose sum is σ = 4001792. Its totient is φ = 1406160.

The previous prime is 2543441. The next prime is 2543459. The reversal of 2543457 is 7543452.

It is not a de Polignac number, because 2543457 - 2⁴ = 2543441 is a prime.

It is an Ulam number.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 1303 + ... + 2604.

It is an arithmetic number, because the mean of its divisors is an integer number (250112).

2^2543457 is an apocalyptic number.

It is an amenable number.

2543457 is a deficient number, since it is larger than the sum of its proper divisors (1458335).

2543457 is a wasteful number, since it uses less digits than its factorization.

2543457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948.

The product of its digits is 16800, while the sum is 30.

The square root of 2543457 is about 1594.8219336340. The cubic root of 2543457 is about 136.5027706773.

The spelling of 2543457 in words is "two million, five hundred forty-three thousand, four hundred fifty-seven".