53620220 has 24 divisors (see below), whose sum is σ = 114451008. Its totient is φ = 21096000.

The previous prime is 53620211. The next prime is 53620243. The reversal of 53620220 is 2202635.

It is a happy number.

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 = 53620192 and 53620201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20756 + ... + 23195.

It is an arithmetic number, because the mean of its divisors is an integer number (4768792).

Almost surely, 2^53620220 is an apocalyptic number.

It is an amenable number.

53620220 is an abundant number, since it is smaller than the sum of its proper divisors (60830788).

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

53620220 is a wasteful number, since it uses less digits than its factorization.

53620220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44021 (or 44019 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 53620220 is about 7322.5828776464. The cubic root of 53620220 is about 377.0881317081.

Adding to 53620220 its reverse (2202635), we get a palindrome (55822855).

The spelling of 53620220 in words is "fifty-three million, six hundred twenty thousand, two hundred twenty".