2543156 has 48 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 945120.

The previous prime is 2543153. The next prime is 2543159. The reversal of 2543156 is 6513452.

2543156 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 (2543153) and next prime (2543159).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543153) 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, 6905 + ... + 7263.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^2543156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2543156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903040).

2543156 is an abundant number, since it is smaller than the sum of its proper divisors (3262924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2543156 is a wasteful number, since it uses less digits than its factorization.

2543156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 402 counting only the distinct ones).

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

The square root of 2543156 is about 1594.7275629398. The cubic root of 2543156 is about 136.4973857550.

The spelling of 2543156 in words is "two million, five hundred forty-three thousand, one hundred fifty-six".