5211216 has 50 divisors (see below), whose sum is σ = 15086522. Its totient is φ = 1736640.

The previous prime is 5211211. The next prime is 5211229. The reversal of 5211216 is 6121125.

It can be written as a sum of positive squares in only one way, i.e., 3240000 + 1971216 = 1800^2 + 1404^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211211) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 715 + ... + 3306.

Almost surely, 2^5211216 is an apocalyptic number.

It is an amenable number.

5211216 is an abundant number, since it is smaller than the sum of its proper divisors (9875306).

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

5211216 is a wasteful number, since it uses less digits than its factorization.

5211216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041 (or 4026 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 5211216 is about 2282.8087961982. The cubic root of 5211216 is about 173.3722923605.

Subtracting 5211216 from its reverse (6121125), we obtain a palindrome (909909).

The spelling of 5211216 in words is "five million, two hundred eleven thousand, two hundred sixteen".