2548531889 has 4 divisors (see below), whose sum is σ = 2573764980. Its totient is φ = 2523298800.

The previous prime is 2548531847. The next prime is 2548531891. The reversal of 2548531889 is 9881358452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1786330225 + 762201664 = 42265^2 + 27608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2548531889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2548531889.

It is not an unprimeable number, because it can be changed into a prime (2548431889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12616394 + ... + 12616595.

It is an arithmetic number, because the mean of its divisors is an integer number (643441245).

Almost surely, 2^2548531889 is an apocalyptic number.

It is an amenable number.

2548531889 is a deficient number, since it is larger than the sum of its proper divisors (25233091).

2548531889 is a wasteful number, since it uses less digits than its factorization.

2548531889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25233090.

The product of its digits is 2764800, while the sum is 53.

The square root of 2548531889 is about 50482.9861339442. The cubic root of 2548531889 is about 1365.9349708980.

The spelling of 2548531889 in words is "two billion, five hundred forty-eight million, five hundred thirty-one thousand, eight hundred eighty-nine".