53072520 has 32 divisors (see below), whose sum is σ = 159217920. Its totient is φ = 14152640.

The previous prime is 53072519. The next prime is 53072549. The reversal of 53072520 is 2527035.

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

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, 221016 + ... + 221255.

It is an arithmetic number, because the mean of its divisors is an integer number (4975560).

Almost surely, 2^53072520 is an apocalyptic number.

It is an amenable number.

53072520 is an abundant number, since it is smaller than the sum of its proper divisors (106145400).

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

53072520 is a wasteful number, since it uses less digits than its factorization.

53072520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442285 (or 442281 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 53072520 is about 7285.0888807207. The cubic root of 53072520 is about 375.7998217698.

Adding to 53072520 its reverse (2527035), we get a palindrome (55599555).

The spelling of 53072520 in words is "fifty-three million, seventy-two thousand, five hundred twenty".