2543571 has 12 divisors (see below), whose sum is σ = 3688360. Its totient is φ = 1689120.

The previous prime is 2543551. The next prime is 2543573. The reversal of 2543571 is 1753452.

It is a happy number.

It is not a de Polignac number, because 2543571 - 2⁶ = 2543507 is a prime.

It is a Duffinian number.

2543571 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2543573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3336 + ... + 4026.

2^2543571 is an apocalyptic number.

2543571 is a deficient number, since it is larger than the sum of its proper divisors (1144789).

2543571 is a wasteful number, since it uses less digits than its factorization.

2543571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106 (or 1103 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 2543571 is about 1594.8576739007. The cubic root of 2543571 is about 136.5048100386.

The spelling of 2543571 in words is "two million, five hundred forty-three thousand, five hundred seventy-one".