53712720 has 160 divisors (see below), whose sum is σ = 187904640. Its totient is φ = 14276736.

The previous prime is 53712713. The next prime is 53712721. The reversal of 53712720 is 2721735.

53712720 is a `hidden beast` number, since 537 + 127 + 2 + 0 = 666.

53712720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53712721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174807 + ... + 175113.

It is an arithmetic number, because the mean of its divisors is an integer number (1174404).

Almost surely, 2^53712720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53712720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93952320).

53712720 is an abundant number, since it is smaller than the sum of its proper divisors (134191920).

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

53712720 is an equidigital number, since it uses as much as digits as its factorization.

53712720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 53712720 is about 7328.8962334038. The cubic root of 53712720 is about 377.3048448180.

The spelling of 53712720 in words is "fifty-three million, seven hundred twelve thousand, seven hundred twenty".