53729 has 4 divisors (see below), whose sum is σ = 57876. Its totient is φ = 49584.

The previous prime is 53719. The next prime is 53731. The reversal of 53729 is 92735.

53729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23104 + 30625 = 152^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 53729 - 2¹² = 49633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53698 and 53707.

It is not an unprimeable number, because it can be changed into a prime (53719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2054 + ... + 2079.

It is an arithmetic number, because the mean of its divisors is an integer number (14469).

2⁵³⁷²⁹ is an apocalyptic number.

It is an amenable number.

53729 is a deficient number, since it is larger than the sum of its proper divisors (4147).

53729 is a wasteful number, since it uses less digits than its factorization.

53729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146.

The product of its digits is 1890, while the sum is 26.

The square root of 53729 is about 231.7951681981. The cubic root of 53729 is about 37.7342960572.

The spelling of 53729 in words is "fifty-three thousand, seven hundred twenty-nine".