53020320 has 48 divisors (see below), whose sum is σ = 167015520. Its totient is φ = 14138624.

The previous prime is 53020307. The next prime is 53020361. The reversal of 53020320 is 2302035.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×53020320² = 5622308665804800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 53020320.

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, 54750 + ... + 55709.

It is an arithmetic number, because the mean of its divisors is an integer number (3479490).

Almost surely, 2^53020320 is an apocalyptic number.

It is an amenable number.

53020320 is an abundant number, since it is smaller than the sum of its proper divisors (113995200).

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

53020320 is a wasteful number, since it uses less digits than its factorization.

53020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110477 (or 110469 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 53020320 is about 7281.5053388705. The cubic root of 53020320 is about 375.6765741479.

Adding to 53020320 its reverse (2302035), we get a palindrome (55322355).

The spelling of 53020320 in words is "fifty-three million, twenty thousand, three hundred twenty".