505047865 has 16 divisors (see below), whose sum is σ = 705708288. Its totient is φ = 339782976.

The previous prime is 505047841. The next prime is 505047899. The reversal of 505047865 is 568740505.

It is a cyclic number.

It is not a de Polignac number, because 505047865 - 2⁵ = 505047833 is a prime.

It is a Duffinian 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, 134277 + ... + 137986.

It is an arithmetic number, because the mean of its divisors is an integer number (44106768).

Almost surely, 2^505047865 is an apocalyptic number.

It is an amenable number.

505047865 is a deficient number, since it is larger than the sum of its proper divisors (200660423).

505047865 is a wasteful number, since it uses less digits than its factorization.

505047865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272328.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 505047865 is about 22473.2700112823. The cubic root of 505047865 is about 796.3625829160.

The spelling of 505047865 in words is "five hundred five million, forty-seven thousand, eight hundred sixty-five".