255628771 has 2 divisors, whose sum is σ = 255628772. Its totient is φ = 255628770.

The previous prime is 255628757. The next prime is 255628777. The reversal of 255628771 is 177826552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255628771 - 2¹⁷ = 255497699 is a prime.

It is not a weakly prime, because it can be changed into another prime (255628777) 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, 127814385 + 127814386.

It is an arithmetic number, because the mean of its divisors is an integer number (127814386).

Almost surely, 2^255628771 is an apocalyptic number.

255628771 is a deficient number, since it is larger than the sum of its proper divisors (1).

255628771 is an equidigital number, since it uses as much as digits as its factorization.

255628771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 43.

The square root of 255628771 is about 15988.3948850408. The cubic root of 255628771 is about 634.6533507976.

The spelling of 255628771 in words is "two hundred fifty-five million, six hundred twenty-eight thousand, seven hundred seventy-one".