255017773 has 2 divisors, whose sum is σ = 255017774. Its totient is φ = 255017772.

The previous prime is 255017747. The next prime is 255017779. The reversal of 255017773 is 377710552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220760164 + 34257609 = 14858^2 + 5853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255017773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255017779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127508886 + 127508887.

It is an arithmetic number, because the mean of its divisors is an integer number (127508887).

Almost surely, 2^255017773 is an apocalyptic number.

It is an amenable number.

255017773 is a deficient number, since it is larger than the sum of its proper divisors (1).

255017773 is an equidigital number, since it uses as much as digits as its factorization.

255017773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51450, while the sum is 37.

The square root of 255017773 is about 15969.2759071913. The cubic root of 255017773 is about 634.1473027952.

The spelling of 255017773 in words is "two hundred fifty-five million, seventeen thousand, seven hundred seventy-three".