505601165 has 24 divisors (see below), whose sum is σ = 665359872. Its totient is φ = 368375040.

The previous prime is 505601141. The next prime is 505601179. The reversal of 505601165 is 561106505.

It is not a de Polignac number, because 505601165 - 2¹⁶ = 505535629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39152 + ... + 50438.

It is an arithmetic number, because the mean of its divisors is an integer number (27723328).

Almost surely, 2^505601165 is an apocalyptic number.

It is an amenable number.

505601165 is a deficient number, since it is larger than the sum of its proper divisors (159758707).

505601165 is a wasteful number, since it uses less digits than its factorization.

505601165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11357 (or 11340 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 505601165 is about 22485.5768215983. The cubic root of 505601165 is about 796.6532923960.

The spelling of 505601165 in words is "five hundred five million, six hundred one thousand, one hundred sixty-five".