505441 has 6 divisors (see below), whose sum is σ = 524342. Its totient is φ = 487200.

The previous prime is 505429. The next prime is 505447. The reversal of 505441 is 144505.

It can be written as a sum of positive squares in 3 ways, for example, as 163216 + 342225 = 404^2 + 585^2 .

It is not a de Polignac number, because 505441 - 2⁵ = 505409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 541 + ... + 1141.

2⁵⁰⁵⁴⁴¹ is an apocalyptic number.

It is an amenable number.

505441 is a deficient number, since it is larger than the sum of its proper divisors (18901).

505441 is an equidigital number, since it uses as much as digits as its factorization.

505441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 505441 is about 710.9437389836. The cubic root of 505441 is about 79.6569161887.

Adding to 505441 its reverse (144505), we get a palindrome (649946).

It can be divided in two parts, 505 and 441, that added together give a triangular number (946 = T₄₃).

The spelling of 505441 in words is "five hundred five thousand, four hundred forty-one".