505411 has 2 divisors, whose sum is σ = 505412. Its totient is φ = 505410.

The previous prime is 505409. The next prime is 505429. The reversal of 505411 is 114505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505411 - 2¹ = 505409 is a prime.

Together with 505409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (505481) 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 as a sum of consecutive naturals, namely, 252705 + 252706.

It is an arithmetic number, because the mean of its divisors is an integer number (252706).

2⁵⁰⁵⁴¹¹ is an apocalyptic number.

505411 is a deficient number, since it is larger than the sum of its proper divisors (1).

505411 is an equidigital number, since it uses as much as digits as its factorization.

505411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 505411 is about 710.9226399546. The cubic root of 505411 is about 79.6553401691.

Adding to 505411 its reverse (114505), we get a palindrome (619916).

The spelling of 505411 in words is "five hundred five thousand, four hundred eleven".