5221312 has 28 divisors (see below), whose sum is σ = 10972800. Its totient is φ = 2456576.

The previous prime is 5221303. The next prime is 5221319. The reversal of 5221312 is 2131225.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312 + ... + 3487.

Almost surely, 2^5221312 is an apocalyptic number.

It is an amenable number.

5221312 is an abundant number, since it is smaller than the sum of its proper divisors (5751488).

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

5221312 is a wasteful number, since it uses less digits than its factorization.

5221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828 (or 4818 counting only the distinct ones).

The product of its digits is 120, while the sum is 16.

The square root of 5221312 is about 2285.0190371198. The cubic root of 5221312 is about 173.4841816339.

Subtracting from 5221312 its sum of digits (16), we obtain a triangular number (5221296 = T₃₂₃₁).

Adding to 5221312 its reverse (2131225), we get a palindrome (7352537).

It can be divided in two parts, 52213 and 12, that added together give a palindrome (52225).

The spelling of 5221312 in words is "five million, two hundred twenty-one thousand, three hundred twelve".