505536985 has 4 divisors (see below), whose sum is σ = 606644388. Its totient is φ = 404429584.

The previous prime is 505536959. The next prime is 505537001. The reversal of 505536985 is 589635505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 309900816 + 195636169 = 17604^2 + 13987^2 .

It is a cyclic number.

It is not a de Polignac number, because 505536985 - 2¹⁵ = 505504217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50553694 + ... + 50553703.

It is an arithmetic number, because the mean of its divisors is an integer number (151661097).

Almost surely, 2^505536985 is an apocalyptic number.

It is an amenable number.

505536985 is a deficient number, since it is larger than the sum of its proper divisors (101107403).

505536985 is a wasteful number, since it uses less digits than its factorization.

505536985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101107402.

The product of its (nonzero) digits is 810000, while the sum is 46.

The square root of 505536985 is about 22484.1496392459. The cubic root of 505536985 is about 796.6195824448.

It can be divided in two parts, 505536 and 985, that added together give a triangular number (506521 = T₁₀₀₆).

The spelling of 505536985 in words is "five hundred five million, five hundred thirty-six thousand, nine hundred eighty-five".