53506220 has 24 divisors (see below), whose sum is σ = 112556304. Its totient is φ = 21365696.

The previous prime is 53506213. The next prime is 53506283. The reversal of 53506220 is 2260535.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 11702 + ... + 15618.

It is an arithmetic number, because the mean of its divisors is an integer number (4689846).

Almost surely, 2^53506220 is an apocalyptic number.

It is an amenable number.

53506220 is an abundant number, since it is smaller than the sum of its proper divisors (59050084).

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

53506220 is a wasteful number, since it uses less digits than its factorization.

53506220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609 (or 4607 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53506220 is about 7314.7945972529. The cubic root of 53506220 is about 376.8207043075.

Adding to 53506220 its reverse (2260535), we get a palindrome (55766755).

The spelling of 53506220 in words is "fifty-three million, five hundred six thousand, two hundred twenty".