505985357 has 8 divisors (see below), whose sum is σ = 514960800. Its totient is φ = 497023344.

The previous prime is 505985353. The next prime is 505985377. The reversal of 505985357 is 753589505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505985357 - 2² = 505985353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505985351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100619 + ... + 105527.

It is an arithmetic number, because the mean of its divisors is an integer number (64370100).

Almost surely, 2^505985357 is an apocalyptic number.

It is an amenable number.

505985357 is a deficient number, since it is larger than the sum of its proper divisors (8975443).

505985357 is a wasteful number, since it uses less digits than its factorization.

505985357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6715.

The product of its (nonzero) digits is 945000, while the sum is 47.

The square root of 505985357 is about 22494.1182756738. The cubic root of 505985357 is about 796.8550260625.

It can be divided in two parts, 50598 and 5357, that added together give a palindrome (55955).

The spelling of 505985357 in words is "five hundred five million, nine hundred eighty-five thousand, three hundred fifty-seven".