505560505 has 8 divisors (see below), whose sum is σ = 606831624. Its totient is φ = 404342400.

The previous prime is 505560479. The next prime is 505560521. The reversal of 505560505 is 505065505.

It can be written as a sum of positive squares in 4 ways, for example, as 4293184 + 501267321 = 2072^2 + 22389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505560505 - 2⁹ = 505559993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12165 + ... + 34045.

It is an arithmetic number, because the mean of its divisors is an integer number (75853953).

Almost surely, 2^505560505 is an apocalyptic number.

It is an amenable number.

505560505 is a deficient number, since it is larger than the sum of its proper divisors (101271119).

505560505 is a wasteful number, since it uses less digits than its factorization.

505560505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26507.

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 505560505 is about 22484.6726682867. The cubic root of 505560505 is about 796.6319364384.

The spelling of 505560505 in words is "five hundred five million, five hundred sixty thousand, five hundred five".