53506320 has 80 divisors (see below), whose sum is σ = 189571200. Its totient is φ = 12229632.

The previous prime is 53506307. The next prime is 53506339. The reversal of 53506320 is 2360535.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14245 + ... + 17604.

It is an arithmetic number, because the mean of its divisors is an integer number (2369640).

Almost surely, 2^53506320 is an apocalyptic number.

It is an amenable number.

53506320 is an abundant number, since it is smaller than the sum of its proper divisors (136064880).

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

53506320 is a wasteful number, since it uses less digits than its factorization.

53506320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31872 (or 31866 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 53506320 is about 7314.8014327116. The cubic root of 53506320 is about 376.8209390593.

Adding to 53506320 its reverse (2360535), we get a palindrome (55866855).

The spelling of 53506320 in words is "fifty-three million, five hundred six thousand, three hundred twenty".