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52729 = 67787
BaseRepresentation
bin1100110111111001
32200022221
430313321
53141404
61044041
7306505
oct146771
980287
1052729
1136686
1226621
131b001
1415305
1510954
hexcdf9

52729 has 4 divisors (see below), whose sum is σ = 53584. Its totient is φ = 51876.

The previous prime is 52727. The next prime is 52733. The reversal of 52729 is 92725.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52729 - 21 = 52727 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327 + ... + 460.

It is an arithmetic number, because the mean of its divisors is an integer number (13396).

252729 is an apocalyptic number.

It is an amenable number.

52729 is a deficient number, since it is larger than the sum of its proper divisors (855).

52729 is an equidigital number, since it uses as much as digits as its factorization.

52729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its digits is 1260, while the sum is 25.

The square root of 52729 is about 229.6279599700. The cubic root of 52729 is about 37.4987258826.

The spelling of 52729 in words is "fifty-two thousand, seven hundred twenty-nine".

Divisors: 1 67 787 52729