505165065 has 32 divisors (see below), whose sum is σ = 880156800. Its totient is φ = 246435840.

The previous prime is 505165051. The next prime is 505165091. The reversal of 505165065 is 560561505.

It is not a de Polignac number, because 505165065 - 2⁹ = 505164553 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 22296 + ... + 38825.

It is an arithmetic number, because the mean of its divisors is an integer number (27504900).

Almost surely, 2^505165065 is an apocalyptic number.

It is an amenable number.

505165065 is a deficient number, since it is larger than the sum of its proper divisors (374991735).

505165065 is a wasteful number, since it uses less digits than its factorization.

505165065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61177.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 505165065 is about 22475.8774022284. The cubic root of 505165065 is about 796.4241787121.

The spelling of 505165065 in words is "five hundred five million, one hundred sixty-five thousand, sixty-five".