52220016 has 60 divisors (see below), whose sum is σ = 147265872. Its totient is φ = 17273088.

The previous prime is 52220011. The next prime is 52220023. The reversal of 52220016 is 61002225.

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 (52220011) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 18405 + ... + 21051.

Almost surely, 2^52220016 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 52220016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73632936).

52220016 is an abundant number, since it is smaller than the sum of its proper divisors (95045856).

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

52220016 is a wasteful number, since it uses less digits than its factorization.

52220016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798 (or 2789 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 52220016 is about 7226.3418131168. The cubic root of 52220016 is about 373.7767930442.

The spelling of 52220016 in words is "fifty-two million, two hundred twenty thousand, sixteen".