505655165 has 8 divisors (see below), whose sum is σ = 627710040. Its totient is φ = 390574912.

The previous prime is 505655141. The next prime is 505655179. The reversal of 505655165 is 561556505.

It can be written as a sum of positive squares in 4 ways, for example, as 34969 + 505620196 = 187^2 + 22486^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 505655165 - 2¹⁰ = 505654141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1743494 + ... + 1743783.

It is an arithmetic number, because the mean of its divisors is an integer number (78463755).

Almost surely, 2^505655165 is an apocalyptic number.

It is an amenable number.

505655165 is a deficient number, since it is larger than the sum of its proper divisors (122054875).

505655165 is a wasteful number, since it uses less digits than its factorization.

505655165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487311.

The product of its (nonzero) digits is 112500, while the sum is 38.

The square root of 505655165 is about 22486.7775592680. Note that the first 3 decimals coincide. The cubic root of 505655165 is about 796.6816531866.

The spelling of 505655165 in words is "five hundred five million, six hundred fifty-five thousand, one hundred sixty-five".