501906 has 16 divisors (see below), whose sum is σ = 1047744. Its totient is φ = 159984.

The previous prime is 501889. The next prime is 501911. The reversal of 501906 is 609105.

It is a nialpdrome in base 9.

It is an unprimeable number.

501906 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 7 ways as a sum of consecutive naturals, for example, 1681 + ... + 1956.

It is an arithmetic number, because the mean of its divisors is an integer number (65484).

2⁵⁰¹⁹⁰⁶ is an apocalyptic number.

501906 is an abundant number, since it is smaller than the sum of its proper divisors (545838).

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

501906 is a wasteful number, since it uses less digits than its factorization.

501906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 501906 is about 708.4532447523. The cubic root of 501906 is about 79.4707775989.

The spelling of 501906 in words is "five hundred one thousand, nine hundred six".