2543541 has 48 divisors (see below), whose sum is σ = 4673088. Its totient is φ = 1219680.

The previous prime is 2543537. The next prime is 2543551. The reversal of 2543541 is 1453452.

It is not a de Polignac number, because 2543541 - 2² = 2543537 is a prime.

2543541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195651 + ... + 195663.

It is an arithmetic number, because the mean of its divisors is an integer number (97356).

2^2543541 is an apocalyptic number.

2543541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2543541 is a deficient number, since it is larger than the sum of its proper divisors (2129547).

2543541 is a wasteful number, since it uses less digits than its factorization.

2543541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 34 counting only the distinct ones).

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

The square root of 2543541 is about 1594.8482686450. The cubic root of 2543541 is about 136.5042733705.

Adding to 2543541 its reverse (1453452), we get a palindrome (3996993).

The spelling of 2543541 in words is "two million, five hundred forty-three thousand, five hundred forty-one".