52220 has 24 divisors (see below), whose sum is σ = 125664. Its totient is φ = 17856.

The previous prime is 52201. The next prime is 52223. The reversal of 52220 is 2225.

52220 is nontrivially palindromic in base 11.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52223) by changing a digit.

52220 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 47 + ... + 326.

It is an arithmetic number, because the mean of its divisors is an integer number (5236).

2⁵²²²⁰ is an apocalyptic number.

It is an amenable number.

52220 is an abundant number, since it is smaller than the sum of its proper divisors (73444).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62832).

52220 is a wasteful number, since it uses less digits than its factorization.

52220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 52220 is about 228.5169577953. The cubic root of 52220 is about 37.3776754870.

Adding to 52220 its reverse (2225), we get a palindrome (54445).

It can be divided in two parts, 522 and 20, that multiplied together give a triangular number (10440 = T₁₄₄).

The spelling of 52220 in words is "fifty-two thousand, two hundred twenty".