505616165 has 8 divisors (see below), whose sum is σ = 607039488. Its totient is φ = 404292880.

The previous prime is 505616161. The next prime is 505616171. The reversal of 505616165 is 561616505.

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

It is not a de Polignac number, because 505616165 - 2² = 505616161 is a prime.

It is a super-5 number, since 5×505616165⁵ (a number of 45 digits) contains 55555 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505616161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13397 + ... + 34506.

It is an arithmetic number, because the mean of its divisors is an integer number (75879936).

Almost surely, 2^505616165 is an apocalyptic number.

It is an amenable number.

505616165 is a deficient number, since it is larger than the sum of its proper divisors (101423323).

505616165 is a wasteful number, since it uses less digits than its factorization.

505616165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50019.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 505616165 is about 22485.9103662716. The cubic root of 505616165 is about 796.6611705960.

The spelling of 505616165 in words is "five hundred five million, six hundred sixteen thousand, one hundred sixty-five".