505492808 has 12 divisors (see below), whose sum is σ = 947918265. Its totient is φ = 252714608.

The previous prime is 505492763. The next prime is 505492811. The reversal of 505492808 is 808294505.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 505260484 + 232324 = 22478^2 + 482^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=15898.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 59618 + ... + 67566.

Almost surely, 2^505492808 is an apocalyptic number.

It is an amenable number.

505492808 is a deficient number, since it is larger than the sum of its proper divisors (442425457).

505492808 is an frugal number, since it uses more digits than its factorization.

505492808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15904 (or 7951 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 505492808 is about 22483.1672146075. The cubic root of 505492808 is about 796.5963772264.

Multiplying 505492808 by its product of nonzero digits (115200), we get a square (58232771481600 = 7631040²).

The spelling of 505492808 in words is "five hundred five million, four hundred ninety-two thousand, eight hundred eight".