52856729 has 4 divisors (see below), whose sum is σ = 52974900. Its totient is φ = 52738560.

The previous prime is 52856701. The next prime is 52856753. The reversal of 52856729 is 92765825.

52856729 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 28601104 + 24255625 = 5348^2 + 4925^2 .

It is a cyclic number.

It is not a de Polignac number, because 52856729 - 2²⁰ = 51808153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52856729.

It is not an unprimeable number, because it can be changed into a prime (52856779) 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 3 ways as a sum of consecutive naturals, for example, 58412 + ... + 59309.

It is an arithmetic number, because the mean of its divisors is an integer number (13243725).

Almost surely, 2^52856729 is an apocalyptic number.

It is an amenable number.

52856729 is a deficient number, since it is larger than the sum of its proper divisors (118171).

52856729 is a wasteful number, since it uses less digits than its factorization.

52856729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118170.

The product of its digits is 302400, while the sum is 44.

The square root of 52856729 is about 7270.2633377341. The cubic root of 52856729 is about 375.2898002807.

The spelling of 52856729 in words is "fifty-two million, eight hundred fifty-six thousand, seven hundred twenty-nine".