2543505671 has 12 divisors (see below), whose sum is σ = 2960085240. Its totient is φ = 2179180080.

The previous prime is 2543505641. The next prime is 2543505673. The reversal of 2543505671 is 1765053452.

It is a happy number.

2543505671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2543505671 - 2⁶ = 2543505607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543505673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113765 + ... + 134273.

It is an arithmetic number, because the mean of its divisors is an integer number (246673770).

Almost surely, 2^2543505671 is an apocalyptic number.

2543505671 is a deficient number, since it is larger than the sum of its proper divisors (416579569).

2543505671 is a wasteful number, since it uses less digits than its factorization.

2543505671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23054 (or 23047 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 2543505671 is about 50433.1802586353. The cubic root of 2543505671 is about 1365.0364136681.

The spelling of 2543505671 in words is "two billion, five hundred forty-three million, five hundred five thousand, six hundred seventy-one".