5121688 has 64 divisors (see below), whose sum is σ = 11682720. Its totient is φ = 2090880.

The previous prime is 5121673. The next prime is 5121689. The reversal of 5121688 is 8861215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138406 + ... + 138442.

Almost surely, 2^5121688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5121688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5841360).

5121688 is an abundant number, since it is smaller than the sum of its proper divisors (6561032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5121688 is a wasteful number, since it uses less digits than its factorization.

5121688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 63 counting only the distinct ones).

The product of its digits is 3840, while the sum is 31.

The square root of 5121688 is about 2263.1146678858. The cubic root of 5121688 is about 172.3737141930.

The spelling of 5121688 in words is "five million, one hundred twenty-one thousand, six hundred eighty-eight".