52821412 has 36 divisors (see below), whose sum is σ = 111249180. Its totient is φ = 21854784.

The previous prime is 52821403. The next prime is 52821469. The reversal of 52821412 is 21412825.

It can be written as a sum of positive squares in 2 ways, for example, as 14182756 + 38638656 = 3766^2 + 6216^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1038 + ... + 10330.

It is an arithmetic number, because the mean of its divisors is an integer number (3090255).

Almost surely, 2^52821412 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 52821412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55624590).

52821412 is an abundant number, since it is smaller than the sum of its proper divisors (58427768).

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

52821412 is a wasteful number, since it uses less digits than its factorization.

52821412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9340 (or 9331 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 52821412 is about 7267.8340652494. The cubic root of 52821412 is about 375.2061965265.

The spelling of 52821412 in words is "fifty-two million, eight hundred twenty-one thousand, four hundred twelve".