5257489887 has 24 divisors (see below), whose sum is σ = 8659398384. Its totient is φ = 3045060864.

The previous prime is 5257489843. The next prime is 5257489903. The reversal of 5257489887 is 7889847525.

5257489887 is a `hidden beast` number, since 52 + 574 + 8 + 9 + 8 + 8 + 7 = 666.

It is not a de Polignac number, because 5257489887 - 2¹¹ = 5257487839 is a prime.

It is a super-3 number, since 3×5257489887³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5257489807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1319653 + ... + 1323630.

It is an arithmetic number, because the mean of its divisors is an integer number (360808266).

Almost surely, 2^5257489887 is an apocalyptic number.

5257489887 is a deficient number, since it is larger than the sum of its proper divisors (3401908497).

5257489887 is a wasteful number, since it uses less digits than its factorization.

5257489887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643319 (or 2643316 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 63.

The square root of 5257489887 is about 72508.5504406204. The cubic root of 5257489887 is about 1738.8394391308.

The spelling of 5257489887 in words is "five billion, two hundred fifty-seven million, four hundred eighty-nine thousand, eight hundred eighty-seven".