505656165 has 16 divisors (see below), whose sum is σ = 924628608. Its totient is φ = 231157056.

The previous prime is 505656119. The next prime is 505656191. The reversal of 505656165 is 561656505.

It is not a de Polignac number, because 505656165 - 2⁷ = 505656037 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2407782 + ... + 2407991.

It is an arithmetic number, because the mean of its divisors is an integer number (57789288).

Almost surely, 2^505656165 is an apocalyptic number.

It is an amenable number.

505656165 is a deficient number, since it is larger than the sum of its proper divisors (418972443).

505656165 is a wasteful number, since it uses less digits than its factorization.

505656165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815788.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 505656165 is about 22486.7997945461. The cubic root of 505656165 is about 796.6821783674.

The spelling of 505656165 in words is "five hundred five million, six hundred fifty-six thousand, one hundred sixty-five".