505577 has 4 divisors (see below), whose sum is σ = 508416. Its totient is φ = 502740.

The previous prime is 505573. The next prime is 505601. The reversal of 505577 is 775505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505577 - 2² = 505573 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505577.

It is not an unprimeable number, because it can be changed into a prime (505573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133 + ... + 1514.

It is an arithmetic number, because the mean of its divisors is an integer number (127104).

2⁵⁰⁵⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

505577 is a deficient number, since it is larger than the sum of its proper divisors (2839).

505577 is a wasteful number, since it uses less digits than its factorization.

505577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838.

The product of its (nonzero) digits is 6125, while the sum is 29.

The square root of 505577 is about 711.0393800627. The cubic root of 505577 is about 79.6640600288.

The spelling of 505577 in words is "five hundred five thousand, five hundred seventy-seven".