53721792 has 140 divisors (see below), whose sum is σ = 163627816. Its totient is φ = 17418240.

The previous prime is 53721779. The next prime is 53721809. The reversal of 53721792 is 29712735.

53721792 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 (36).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 222792 + ... + 223032.

Almost surely, 2^53721792 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 53721792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81813908).

53721792 is an abundant number, since it is smaller than the sum of its proper divisors (109906024).

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

53721792 is a wasteful number, since it uses less digits than its factorization.

53721792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 289 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 53721792 is about 7329.5151272100. The cubic root of 53721792 is about 377.3260857014.

The spelling of 53721792 in words is "fifty-three million, seven hundred twenty-one thousand, seven hundred ninety-two".