501000023 has 2 divisors, whose sum is σ = 501000024. Its totient is φ = 501000022.

The previous prime is 500999987. The next prime is 501000029. The reversal of 501000023 is 320000105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 501000023 - 2²⁴ = 484222807 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 500999968 and 501000013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501000029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250500011 + 250500012.

It is an arithmetic number, because the mean of its divisors is an integer number (250500012).

Almost surely, 2^501000023 is an apocalyptic number.

501000023 is a deficient number, since it is larger than the sum of its proper divisors (1).

501000023 is an equidigital number, since it uses as much as digits as its factorization.

501000023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 501000023 is about 22383.0297993815. The cubic root of 501000023 is about 794.2293194576.

Adding to 501000023 its reverse (320000105), we get a palindrome (821000128).

The spelling of 501000023 in words is "five hundred one million, twenty-three", and thus it is an aban number.