501404 has 12 divisors (see below), whose sum is σ = 886704. Its totient is φ = 248064.

The previous prime is 501401. The next prime is 501409. The reversal of 501404 is 404105.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 501404.

It is not an unprimeable number, because it can be changed into a prime (501401) 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 3 ways as a sum of consecutive naturals, for example, 197 + ... + 1020.

It is an arithmetic number, because the mean of its divisors is an integer number (73892).

2⁵⁰¹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

501404 is a deficient number, since it is larger than the sum of its proper divisors (385300).

501404 is a wasteful number, since it uses less digits than its factorization.

501404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 501404 is about 708.0988631540. The cubic root of 501404 is about 79.4442735401. Note that the first 3 decimals are identical.

Adding to 501404 its reverse (404105), we get a palindrome (905509).

The spelling of 501404 in words is "five hundred one thousand, four hundred four".