2543723755 has 24 divisors (see below), whose sum is σ = 3291389856. Its totient is φ = 1883629440.

The previous prime is 2543723747. The next prime is 2543723761. The reversal of 2543723755 is 5573273452.

It is not a de Polignac number, because 2543723755 - 2³ = 2543723747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99007 + ... + 122023.

It is an arithmetic number, because the mean of its divisors is an integer number (137141244).

Almost surely, 2^2543723755 is an apocalyptic number.

2543723755 is a deficient number, since it is larger than the sum of its proper divisors (747666101).

2543723755 is a wasteful number, since it uses less digits than its factorization.

2543723755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23107 (or 23076 counting only the distinct ones).

The product of its digits is 882000, while the sum is 43.

The square root of 2543723755 is about 50435.3423206386. The cubic root of 2543723755 is about 1365.0754259779.

The spelling of 2543723755 in words is "two billion, five hundred forty-three million, seven hundred twenty-three thousand, seven hundred fifty-five".