255384769 has 2 divisors, whose sum is σ = 255384770. Its totient is φ = 255384768.

The previous prime is 255384749. The next prime is 255384791. The reversal of 255384769 is 967483552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207705744 + 47679025 = 14412^2 + 6905^2 .

It is a cyclic number.

It is not a de Polignac number, because 255384769 - 2⁵ = 255384737 is a prime.

It is a super-2 number, since 2×255384769² = 130442760474366722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255384749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127692384 + 127692385.

It is an arithmetic number, because the mean of its divisors is an integer number (127692385).

Almost surely, 2^255384769 is an apocalyptic number.

It is an amenable number.

255384769 is a deficient number, since it is larger than the sum of its proper divisors (1).

255384769 is an equidigital number, since it uses as much as digits as its factorization.

255384769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 49.

The square root of 255384769 is about 15980.7624661654. The cubic root of 255384769 is about 634.4513573840.

The spelling of 255384769 in words is "two hundred fifty-five million, three hundred eighty-four thousand, seven hundred sixty-nine".