505597 has 4 divisors (see below), whose sum is σ = 535356. Its totient is φ = 475840.

The previous prime is 505573. The next prime is 505601. The reversal of 505597 is 795505.

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 423801 + 81796 = 651^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 505597 - 2⁷ = 505469 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14854 + ... + 14887.

It is an arithmetic number, because the mean of its divisors is an integer number (133839).

2⁵⁰⁵⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

505597 is a deficient number, since it is larger than the sum of its proper divisors (29759).

505597 is a wasteful number, since it uses less digits than its factorization.

505597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29758.

The product of its (nonzero) digits is 7875, while the sum is 31.

The square root of 505597 is about 711.0534438423. The cubic root of 505597 is about 79.6651104855.

The spelling of 505597 in words is "five hundred five thousand, five hundred ninety-seven".