505578860 has 12 divisors (see below), whose sum is σ = 1061715648. Its totient is φ = 202231536.

The previous prime is 505578811. The next prime is 505578863. The reversal of 505578860 is 68875505.

It is not an unprimeable number, because it can be changed into a prime (505578863) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12639452 + ... + 12639491.

It is an arithmetic number, because the mean of its divisors is an integer number (88476304).

Almost surely, 2^505578860 is an apocalyptic number.

It is an amenable number.

505578860 is an abundant number, since it is smaller than the sum of its proper divisors (556136788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505578860 is a wasteful number, since it uses less digits than its factorization.

505578860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25278952 (or 25278950 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 44.

The square root of 505578860 is about 22485.0808315203. The cubic root of 505578860 is about 796.6415772246.

The spelling of 505578860 in words is "five hundred five million, five hundred seventy-eight thousand, eight hundred sixty".