501923 has 4 divisors (see below), whose sum is σ = 528360. Its totient is φ = 475488.

The previous prime is 501911. The next prime is 501931. The reversal of 501923 is 329105.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 501923 - 2¹⁸ = 239779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501895 and 501904.

It is not an unprimeable number, because it can be changed into a prime (501953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13190 + ... + 13227.

It is an arithmetic number, because the mean of its divisors is an integer number (132090).

2⁵⁰¹⁹²³ is an apocalyptic number.

501923 is a deficient number, since it is larger than the sum of its proper divisors (26437).

501923 is a wasteful number, since it uses less digits than its factorization.

501923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26436.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 501923 is about 708.4652426196. The cubic root of 501923 is about 79.4716748373.

The spelling of 501923 in words is "five hundred one thousand, nine hundred twenty-three".