52728239 has 2 divisors, whose sum is σ = 52728240. Its totient is φ = 52728238.

The previous prime is 52728233. The next prime is 52728251. The reversal of 52728239 is 93282725.

52728239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52728239 - 2⁴ = 52728223 is a prime.

It is a super-2 number, since 2×52728239² = 5560534376082242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52728233) 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 as a sum of consecutive naturals, namely, 26364119 + 26364120.

It is an arithmetic number, because the mean of its divisors is an integer number (26364120).

Almost surely, 2^52728239 is an apocalyptic number.

52728239 is a deficient number, since it is larger than the sum of its proper divisors (1).

52728239 is an equidigital number, since it uses as much as digits as its factorization.

52728239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 52728239 is about 7261.4212796119. The cubic root of 52728239 is about 374.9854548433.

The spelling of 52728239 in words is "fifty-two million, seven hundred twenty-eight thousand, two hundred thirty-nine".