53729568 has 120 divisors (see below), whose sum is σ = 166486320. Its totient is φ = 16951680.

The previous prime is 53729563. The next prime is 53729569. The reversal of 53729568 is 86592735.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (53729563) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48703 + ... + 49793.

It is an arithmetic number, because the mean of its divisors is an integer number (1387386).

Almost surely, 2^53729568 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 53729568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83243160).

53729568 is an abundant number, since it is smaller than the sum of its proper divisors (112756752).

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

53729568 is a wasteful number, since it uses less digits than its factorization.

53729568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1115 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 53729568 is about 7330.0455660248. The cubic root of 53729568 is about 377.3442902697.

The spelling of 53729568 in words is "fifty-three million, seven hundred twenty-nine thousand, five hundred sixty-eight".