2543516 has 6 divisors (see below), whose sum is σ = 4451160. Its totient is φ = 1271756.

The previous prime is 2543509. The next prime is 2543537. The reversal of 2543516 is 6153452.

It is a d-powerful number, because it can be written as 2¹³ + 5 + 4⁶ + 3¹² + 5⁹ + 1 + 6⁶ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317936 + ... + 317943.

It is an arithmetic number, because the mean of its divisors is an integer number (741860).

2^2543516 is an apocalyptic number.

It is an amenable number.

2543516 is a deficient number, since it is larger than the sum of its proper divisors (1907644).

2543516 is a wasteful number, since it uses less digits than its factorization.

2543516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635883 (or 635881 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 2543516 is about 1594.8404308896. The cubic root of 2543516 is about 136.5038261438.

Adding to 2543516 its reverse (6153452), we get a palindrome (8696968).

The spelling of 2543516 in words is "two million, five hundred forty-three thousand, five hundred sixteen".