255500549 has 2 divisors, whose sum is σ = 255500550. Its totient is φ = 255500548.

The previous prime is 255500501. The next prime is 255500569. The reversal of 255500549 is 945005552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155800324 + 99700225 = 12482^2 + 9985^2 .

It is a cyclic number.

It is not a de Polignac number, because 255500549 - 2¹² = 255496453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255500569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127750274 + 127750275.

It is an arithmetic number, because the mean of its divisors is an integer number (127750275).

Almost surely, 2^255500549 is an apocalyptic number.

It is an amenable number.

255500549 is a deficient number, since it is larger than the sum of its proper divisors (1).

255500549 is an equidigital number, since it uses as much as digits as its factorization.

255500549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 255500549 is about 15984.3845361653. The cubic root of 255500549 is about 634.5472201621.

The spelling of 255500549 in words is "two hundred fifty-five million, five hundred thousand, five hundred forty-nine".