52857143 has 4 divisors (see below), whose sum is σ = 53402160. Its totient is φ = 52312128.

The previous prime is 52857137. The next prime is 52857179. The reversal of 52857143 is 34175825.

It is a happy number.

52857143 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 is a cyclic number.

It is not a de Polignac number, because 52857143 - 2¹⁸ = 52594999 is a prime.

It is a super-2 number, since 2×52857143² = 5587755132244898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52851143) 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, 272363 + ... + 272556.

It is an arithmetic number, because the mean of its divisors is an integer number (13350540).

Almost surely, 2^52857143 is an apocalyptic number.

52857143 is a deficient number, since it is larger than the sum of its proper divisors (545017).

52857143 is an equidigital number, since it uses as much as digits as its factorization.

52857143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545016.

The product of its digits is 33600, while the sum is 35.

The square root of 52857143 is about 7270.2918098244. The cubic root of 52857143 is about 375.2907800965.

The spelling of 52857143 in words is "fifty-two million, eight hundred fifty-seven thousand, one hundred forty-three".