53322220 has 48 divisors (see below), whose sum is σ = 129024000. Its totient is φ = 18131904.

The previous prime is 53322197. The next prime is 53322239. The reversal of 53322220 is 2222335.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16281 + ... + 19279.

It is an arithmetic number, because the mean of its divisors is an integer number (2688000).

Almost surely, 2^53322220 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 53322220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64512000).

53322220 is an abundant number, since it is smaller than the sum of its proper divisors (75701780).

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

53322220 is a wasteful number, since it uses less digits than its factorization.

53322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142 (or 3140 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 53322220 is about 7302.2065158416. The cubic root of 53322220 is about 376.3882646185.

Adding to 53322220 its reverse (2222335), we get a palindrome (55544555).

The spelling of 53322220 in words is "fifty-three million, three hundred twenty-two thousand, two hundred twenty".