255081769 has 2 divisors, whose sum is σ = 255081770. Its totient is φ = 255081768.

The previous prime is 255081751. The next prime is 255081779. The reversal of 255081769 is 967180552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226051225 + 29030544 = 15035^2 + 5388^2 .

It is a cyclic number.

It is not a de Polignac number, because 255081769 - 2⁷ = 255081641 is a prime.

It is a super-2 number, since 2×255081769² = 130133417752338722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255081779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127540884 + 127540885.

It is an arithmetic number, because the mean of its divisors is an integer number (127540885).

Almost surely, 2^255081769 is an apocalyptic number.

It is an amenable number.

255081769 is a deficient number, since it is larger than the sum of its proper divisors (1).

255081769 is an equidigital number, since it uses as much as digits as its factorization.

255081769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 255081769 is about 15971.2795041600. The cubic root of 255081769 is about 634.2003441918.

The spelling of 255081769 in words is "two hundred fifty-five million, eighty-one thousand, seven hundred sixty-nine".