505501505 has 16 divisors (see below), whose sum is σ = 623019600. Its totient is φ = 393507840.

The previous prime is 505501501. The next prime is 505501519. The reversal of 505501505 is 505105505.

It can be written as a sum of positive squares in 8 ways, for example, as 11950849 + 493550656 = 3457^2 + 22216^2 .

It is not a de Polignac number, because 505501505 - 2² = 505501501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505501501) 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 in 15 ways as a sum of consecutive naturals, for example, 80831 + ... + 86859.

It is an arithmetic number, because the mean of its divisors is an integer number (38938725).

Almost surely, 2^505501505 is an apocalyptic number.

It is an amenable number.

505501505 is a deficient number, since it is larger than the sum of its proper divisors (117518095).

505501505 is a wasteful number, since it uses less digits than its factorization.

505501505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 505501505 is about 22483.3606251379. The cubic root of 505501505 is about 796.6009456784.

The spelling of 505501505 in words is "five hundred five million, five hundred one thousand, five hundred five".