501894 has 12 divisors (see below), whose sum is σ = 1087476. Its totient is φ = 167292.

The previous prime is 501889. The next prime is 501911. The reversal of 501894 is 498105.

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

501894 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13924 + ... + 13959.

It is an arithmetic number, because the mean of its divisors is an integer number (90623).

2⁵⁰¹⁸⁹⁴ is an apocalyptic number.

501894 is an abundant number, since it is smaller than the sum of its proper divisors (585582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501894 is a wasteful number, since it uses less digits than its factorization.

501894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27891 (or 27888 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 501894 is about 708.4447755471. Note that the first 3 decimals coincide. The cubic root of 501894 is about 79.4701442420.

Adding to 501894 its reverse (498105), we get a palindrome (999999).

The spelling of 501894 in words is "five hundred one thousand, eight hundred ninety-four".