53220 has 24 divisors (see below), whose sum is σ = 149184. Its totient is φ = 14176.

The previous prime is 53201. The next prime is 53231. The reversal of 53220 is 2235.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 53196 and 53205.

It is an unprimeable number.

53220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384 + ... + 503.

It is an arithmetic number, because the mean of its divisors is an integer number (6216).

2⁵³²²⁰ is an apocalyptic number.

It is an amenable number.

53220 is an abundant number, since it is smaller than the sum of its proper divisors (95964).

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 (74592).

53220 is a wasteful number, since it uses less digits than its factorization.

53220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 53220 is about 230.6946033179. The cubic root of 53220 is about 37.6147595594.

Adding to 53220 its reverse (2235), we get a palindrome (55455).

The spelling of 53220 in words is "fifty-three thousand, two hundred twenty".