2543115 has 16 divisors (see below), whose sum is σ = 4308768. Its totient is φ = 1276416.

The previous prime is 2543113. The next prime is 2543117. The reversal of 2543115 is 5113452.

2543115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2543113) and next prime (2543117).

It is not a de Polignac number, because 2543115 - 2¹ = 2543113 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2543091 and 2543100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4732 + ... + 5241.

It is an arithmetic number, because the mean of its divisors is an integer number (269298).

2^2543115 is an apocalyptic number.

2543115 is a deficient number, since it is larger than the sum of its proper divisors (1765653).

2543115 is a wasteful number, since it uses less digits than its factorization.

2543115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998.

The product of its digits is 600, while the sum is 21.

The square root of 2543115 is about 1594.7147080277. The cubic root of 2543115 is about 136.4966522277.

Adding to 2543115 its reverse (5113452), we get a palindrome (7656567).

The spelling of 2543115 in words is "two million, five hundred forty-three thousand, one hundred fifteen".