53220524 has 12 divisors (see below), whose sum is σ = 106441104. Its totient is φ = 22808784.

The previous prime is 53220499. The next prime is 53220553. The reversal of 53220524 is 42502235.

53220524 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 53220524.

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 3 ways as a sum of consecutive naturals, for example, 950339 + ... + 950394.

It is an arithmetic number, because the mean of its divisors is an integer number (8870092).

Almost surely, 2^53220524 is an apocalyptic number.

It is an amenable number.

53220524 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

53220524 is a wasteful number, since it uses less digits than its factorization.

53220524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900744 (or 1900742 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 53220524 is about 7295.2398178538. The cubic root of 53220524 is about 376.1488300962.

Adding to 53220524 its reverse (42502235), we get a palindrome (95722759).

The spelling of 53220524 in words is "fifty-three million, two hundred twenty thousand, five hundred twenty-four".