505772517 has 16 divisors (see below), whose sum is σ = 681649920. Its totient is φ = 333557952.

The previous prime is 505772513. The next prime is 505772551. The reversal of 505772517 is 715277505.

It is not a de Polignac number, because 505772517 - 2² = 505772513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505772513) 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 15 ways as a sum of consecutive naturals, for example, 110323 + ... + 114815.

It is an arithmetic number, because the mean of its divisors is an integer number (42603120).

Almost surely, 2^505772517 is an apocalyptic number.

It is an amenable number.

505772517 is a deficient number, since it is larger than the sum of its proper divisors (175877403).

505772517 is a wasteful number, since it uses less digits than its factorization.

505772517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4892.

The product of its (nonzero) digits is 85750, while the sum is 39.

The square root of 505772517 is about 22489.3867635380. The cubic root of 505772517 is about 796.7432794755.

The spelling of 505772517 in words is "five hundred five million, seven hundred seventy-two thousand, five hundred seventeen".