53721760 has 48 divisors (see below), whose sum is σ = 131023872. Its totient is φ = 20793600.

The previous prime is 53721757. The next prime is 53721761. The reversal of 53721760 is 6712735.

53721760 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 (31).

It is not an unprimeable number, because it can be changed into a prime (53721761) 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 7 ways as a sum of consecutive naturals, for example, 456 + ... + 10375.

It is an arithmetic number, because the mean of its divisors is an integer number (2729664).

Almost surely, 2^53721760 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 53721760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65511936).

53721760 is an abundant number, since it is smaller than the sum of its proper divisors (77302112).

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

53721760 is a wasteful number, since it uses less digits than its factorization.

53721760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10877 (or 10869 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 53721760 is about 7329.5129442549. The cubic root of 53721760 is about 377.3260107819.

The spelling of 53721760 in words is "fifty-three million, seven hundred twenty-one thousand, seven hundred sixty".