505232717 has 6 divisors (see below), whose sum is σ = 555338574. Its totient is φ = 459302360.

The previous prime is 505232713. The next prime is 505232747. The reversal of 505232717 is 717232505.

It can be written as a sum of positive squares in only one way, i.e., 503060041 + 2172676 = 22429^2 + 1474^2 .

It is not a de Polignac number, because 505232717 - 2² = 505232713 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 (505232713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2087618 + ... + 2087859.

It is an arithmetic number, because the mean of its divisors is an integer number (92556429).

Almost surely, 2^505232717 is an apocalyptic number.

It is an amenable number.

505232717 is a deficient number, since it is larger than the sum of its proper divisors (50105857).

505232717 is a wasteful number, since it uses less digits than its factorization.

505232717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175499 (or 4175488 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 505232717 is about 22477.3823431466. The cubic root of 505232717 is about 796.4597296553.

The spelling of 505232717 in words is "five hundred five million, two hundred thirty-two thousand, seven hundred seventeen".