53235220 has 24 divisors (see below), whose sum is σ = 114522408. Its totient is φ = 20774400.

The previous prime is 53235199. The next prime is 53235223. The reversal of 53235220 is 2253235.

It can be written as a sum of positive squares in 4 ways, for example, as 3701776 + 49533444 = 1924^2 + 7038^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53235191 and 53235200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53235223) by changing a digit.

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, 31641 + ... + 33280.

It is an arithmetic number, because the mean of its divisors is an integer number (4771767).

Almost surely, 2^53235220 is an apocalyptic number.

It is an amenable number.

53235220 is an abundant number, since it is smaller than the sum of its proper divisors (61287188).

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

53235220 is a wasteful number, since it uses less digits than its factorization.

53235220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64971 (or 64969 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 53235220 is about 7296.2469804688. The cubic root of 53235220 is about 376.1834494126.

Adding to 53235220 its reverse (2253235), we get a palindrome (55488455).

The spelling of 53235220 in words is "fifty-three million, two hundred thirty-five thousand, two hundred twenty".