255389077 has 2 divisors, whose sum is σ = 255389078. Its totient is φ = 255389076.

The previous prime is 255389063. The next prime is 255389081. The reversal of 255389077 is 770983552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223024356 + 32364721 = 14934^2 + 5689^2 .

It is a cyclic number.

It is not a de Polignac number, because 255389077 - 2⁷ = 255388949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255389087) 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, 127694538 + 127694539.

It is an arithmetic number, because the mean of its divisors is an integer number (127694539).

Almost surely, 2^255389077 is an apocalyptic number.

It is an amenable number.

255389077 is a deficient number, since it is larger than the sum of its proper divisors (1).

255389077 is an equidigital number, since it uses as much as digits as its factorization.

255389077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 255389077 is about 15980.8972526576. The cubic root of 255389077 is about 634.4549248130.

The spelling of 255389077 in words is "two hundred fifty-five million, three hundred eighty-nine thousand, seventy-seven".