255728071 has 2 divisors, whose sum is σ = 255728072. Its totient is φ = 255728070.

The previous prime is 255728051. The next prime is 255728101. The reversal of 255728071 is 170827552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255728071 - 2⁹ = 255727559 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 255728071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255728051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127864035 + 127864036.

It is an arithmetic number, because the mean of its divisors is an integer number (127864036).

Almost surely, 2^255728071 is an apocalyptic number.

255728071 is a deficient number, since it is larger than the sum of its proper divisors (1).

255728071 is an equidigital number, since it uses as much as digits as its factorization.

255728071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 255728071 is about 15991.4999609167. The cubic root of 255728071 is about 634.7355180213.

It can be divided in two parts, 2557 and 28071, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 255728071 in words is "two hundred fifty-five million, seven hundred twenty-eight thousand, seventy-one".