505424985 has 32 divisors (see below), whose sum is σ = 916728960. Its totient is φ = 235726848.

The previous prime is 505424951. The next prime is 505425031. The reversal of 505424985 is 589424505.

It is not a de Polignac number, because 505424985 - 2⁸ = 505424729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64504 + ... + 71913.

It is an arithmetic number, because the mean of its divisors is an integer number (28647780).

Almost surely, 2^505424985 is an apocalyptic number.

It is an amenable number.

505424985 is a deficient number, since it is larger than the sum of its proper divisors (411303975).

505424985 is a wasteful number, since it uses less digits than its factorization.

505424985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136457.

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 505424985 is about 22481.6588578334. The cubic root of 505424985 is about 796.5607486465.

The spelling of 505424985 in words is "five hundred five million, four hundred twenty-four thousand, nine hundred eighty-five".