2543843256 has 16 divisors (see below), whose sum is σ = 6359608200. Its totient is φ = 847947744.

The previous prime is 2543843227. The next prime is 2543843261. The reversal of 2543843256 is 6523483452.

It is a happy number.

It is a super-2 number, since 2×2543843256² = 12942277022193363072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52996711 + ... + 52996758.

Almost surely, 2^2543843256 is an apocalyptic number.

It is an amenable number.

2543843256 is an abundant number, since it is smaller than the sum of its proper divisors (3815764944).

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

2543843256 is a wasteful number, since it uses less digits than its factorization.

2543843256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105993478 (or 105993474 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The square root of 2543843256 is about 50436.5270017673. The cubic root of 2543843256 is about 1365.0968021622.

The spelling of 2543843256 in words is "two billion, five hundred forty-three million, eight hundred forty-three thousand, two hundred fifty-six".