52211216 has 20 divisors (see below), whose sum is σ = 107110332. Its totient is φ = 24569856.

The previous prime is 52211177. The next prime is 52211251. The reversal of 52211216 is 61211225.

It can be written as a sum of positive squares in 2 ways, for example, as 43824400 + 8386816 = 6620^2 + 2896^2 .

It is a super-2 number, since 2×52211216² = 5452022152397312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95705 + ... + 96248.

Almost surely, 2^52211216 is an apocalyptic number.

It is an amenable number.

52211216 is an abundant number, since it is smaller than the sum of its proper divisors (54899116).

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

52211216 is a wasteful number, since it uses less digits than its factorization.

52211216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191978 (or 191972 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 52211216 is about 7225.7329040036. The cubic root of 52211216 is about 373.7557958557.

Subtracting 52211216 from its reverse (61211225), we obtain a palindrome (9000009).

The spelling of 52211216 in words is "fifty-two million, two hundred eleven thousand, two hundred sixteen".