5121284 has 72 divisors (see below), whose sum is σ = 11634840. Its totient is φ = 1956864.

The previous prime is 5121271. The next prime is 5121287. The reversal of 5121284 is 4821215.

5121284 is digitally balanced in base 5, 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 4 ways, for example, as 1960000 + 3161284 = 1400^2 + 1778^2 .

It is not an unprimeable number, because it can be changed into a prime (5121287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96602 + ... + 96654.

It is an arithmetic number, because the mean of its divisors is an integer number (161595).

Almost surely, 2^5121284 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 5121284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5817420).

5121284 is an abundant number, since it is smaller than the sum of its proper divisors (6513556).

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

5121284 is a wasteful number, since it uses less digits than its factorization.

5121284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 108 counting only the distinct ones).

The product of its digits is 640, while the sum is 23.

The square root of 5121284 is about 2263.0254086068. The cubic root of 5121284 is about 172.3691817803.

Adding to 5121284 its reverse (4821215), we get a palindrome (9942499).

The spelling of 5121284 in words is "five million, one hundred twenty-one thousand, two hundred eighty-four".