505541549 has 2 divisors, whose sum is σ = 505541550. Its totient is φ = 505541548.

The previous prime is 505541527. The next prime is 505541567. The reversal of 505541549 is 945145505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356945449 + 148596100 = 18893^2 + 12190^2 .

It is a cyclic number.

It is not a de Polignac number, because 505541549 - 2⁸ = 505541293 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 (505541579) 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, 252770774 + 252770775.

It is an arithmetic number, because the mean of its divisors is an integer number (252770775).

Almost surely, 2^505541549 is an apocalyptic number.

It is an amenable number.

505541549 is a deficient number, since it is larger than the sum of its proper divisors (1).

505541549 is an equidigital number, since it uses as much as digits as its factorization.

505541549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 38.

The square root of 505541549 is about 22484.2511327373. The cubic root of 505541549 is about 796.6219797378.

The spelling of 505541549 in words is "five hundred five million, five hundred forty-one thousand, five hundred forty-nine".