53053220 has 48 divisors (see below), whose sum is σ = 122169600. Its totient is φ = 19192320.

The previous prime is 53053211. The next prime is 53053241. The reversal of 53053220 is 2235035.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 53053192 and 53053201.

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 15 ways as a sum of consecutive naturals, for example, 52076 + ... + 53084.

It is an arithmetic number, because the mean of its divisors is an integer number (2545200).

Almost surely, 2^53053220 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 53053220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61084800).

53053220 is an abundant number, since it is smaller than the sum of its proper divisors (69116380).

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

53053220 is a wasteful number, since it uses less digits than its factorization.

53053220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 53053220 is about 7283.7641367634. The cubic root of 53053220 is about 375.7542626246.

Adding to 53053220 its reverse (2235035), we get a palindrome (55288255).

The spelling of 53053220 in words is "fifty-three million, fifty-three thousand, two hundred twenty".