2543521885 has 16 divisors (see below), whose sum is σ = 3086484912. Its totient is φ = 2012032000.

The previous prime is 2543521847. The next prime is 2543521913. The reversal of 2543521885 is 5881253452.

2543521885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 19263321 + 2524258564 = 4389^2 + 50242^2 .

It is not a de Polignac number, because 2543521885 - 2²³ = 2535133277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442047 + ... + 447763.

It is an arithmetic number, because the mean of its divisors is an integer number (192905307).

Almost surely, 2^2543521885 is an apocalyptic number.

It is an amenable number.

2543521885 is a deficient number, since it is larger than the sum of its proper divisors (542963027).

2543521885 is a wasteful number, since it uses less digits than its factorization.

2543521885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6704.

The product of its digits is 384000, while the sum is 43.

The square root of 2543521885 is about 50433.3410057276. The cubic root of 2543521885 is about 1365.0393142125.

The spelling of 2543521885 in words is "two billion, five hundred forty-three million, five hundred twenty-one thousand, eight hundred eighty-five".