505767505 has 16 divisors (see below), whose sum is σ = 621846720. Its totient is φ = 394688448.

The previous prime is 505767497. The next prime is 505767553.

505767505 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 505767505 - 2³ = 505767497 is a prime.

It is a super-2 number, since 2×505767505² = 511601538227850050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311586 + ... + 313204.

It is an arithmetic number, because the mean of its divisors is an integer number (38865420).

Almost surely, 2^505767505 is an apocalyptic number.

It is an amenable number.

505767505 is a deficient number, since it is larger than the sum of its proper divisors (116079215).

505767505 is a wasteful number, since it uses less digits than its factorization.

505767505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120.

The product of its (nonzero) digits is 183750, while the sum is 40.

The square root of 505767505 is about 22489.2753329226. The cubic root of 505767505 is about 796.7406476661.

It can be divided in two parts, 50576 and 7505, that added together give a square (58081 = 241²).

The spelling of 505767505 in words is "five hundred five million, seven hundred sixty-seven thousand, five hundred five".