505000549 has 2 divisors, whose sum is σ = 505000550. Its totient is φ = 505000548.

The previous prime is 505000543. The next prime is 505000583. The reversal of 505000549 is 945000505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376631649 + 128368900 = 19407^2 + 11330^2 .

It is a cyclic number.

It is not a de Polignac number, because 505000549 - 2³ = 505000541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505000541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252500274 + 252500275.

It is an arithmetic number, because the mean of its divisors is an integer number (252500275).

Almost surely, 2^505000549 is an apocalyptic number.

It is an amenable number.

505000549 is a deficient number, since it is larger than the sum of its proper divisors (1).

505000549 is an equidigital number, since it uses as much as digits as its factorization.

505000549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 505000549 is about 22472.2172693306. The cubic root of 505000549 is about 796.3377127526.

The spelling of 505000549 in words is "five hundred five million, five hundred forty-nine", and thus it is an aban number.