505361 has 4 divisors (see below), whose sum is σ = 510192. Its totient is φ = 500532.

The previous prime is 505357. The next prime is 505367. The reversal of 505361 is 163505.

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 505361 - 2² = 505357 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 505361.

It is not an unprimeable number, because it can be changed into a prime (505367) 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, 2255 + ... + 2468.

It is an arithmetic number, because the mean of its divisors is an integer number (127548).

2⁵⁰⁵³⁶¹ is an apocalyptic number.

It is an amenable number.

505361 is a deficient number, since it is larger than the sum of its proper divisors (4831).

505361 is a wasteful number, since it uses less digits than its factorization.

505361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 505361 is about 710.8874735146. The cubic root of 505361 is about 79.6527133312.

Adding to 505361 its reverse (163505), we get a palindrome (668866).

The spelling of 505361 in words is "five hundred five thousand, three hundred sixty-one".