5187681 has 12 divisors (see below), whose sum is σ = 7564752. Its totient is φ = 3425496.

The previous prime is 5187671. The next prime is 5187683. The reversal of 5187681 is 1867815.

It is not a de Polignac number, because 5187681 - 2⁶ = 5187617 is a prime.

It is a super-2 number, since 2×5187681² = 53824068315522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5187683) 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, 1731 + ... + 3656.

It is an arithmetic number, because the mean of its divisors is an integer number (630396).

Almost surely, 2^5187681 is an apocalyptic number.

It is an amenable number.

5187681 is a deficient number, since it is larger than the sum of its proper divisors (2377071).

5187681 is a wasteful number, since it uses less digits than its factorization.

5187681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500 (or 5497 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 5187681 is about 2277.6481291016. The cubic root of 5187681 is about 173.1109026390.

The spelling of 5187681 in words is "five million, one hundred eighty-seven thousand, six hundred eighty-one".