505506577 has 4 divisors (see below), whose sum is σ = 535242276. Its totient is φ = 475770880.

The previous prime is 505506563. The next prime is 505506583. The reversal of 505506577 is 775605505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 427290241 + 78216336 = 20671^2 + 8844^2 .

It is a cyclic number.

It is not a de Polignac number, because 505506577 - 2¹¹ = 505504529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505506557) 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, 14867824 + ... + 14867857.

It is an arithmetic number, because the mean of its divisors is an integer number (133810569).

Almost surely, 2^505506577 is an apocalyptic number.

It is an amenable number.

505506577 is a deficient number, since it is larger than the sum of its proper divisors (29735699).

505506577 is a wasteful number, since it uses less digits than its factorization.

505506577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29735698.

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

The square root of 505506577 is about 22483.4734193807. The cubic root of 505506577 is about 796.6036099280.

The spelling of 505506577 in words is "five hundred five million, five hundred six thousand, five hundred seventy-seven".