500010921 has 16 divisors (see below), whose sum is σ = 741400000. Its totient is φ = 333051264.

The previous prime is 500010913. The next prime is 500010943. The reversal of 500010921 is 129010005.

It is not a de Polignac number, because 500010921 - 2³ = 500010913 is a prime.

It is a super-2 number, since 2×500010921² = 500021842238536482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 500010894 and 500010903.

It is not an unprimeable number, because it can be changed into a prime (500010911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26310 + ... + 41136.

It is an arithmetic number, because the mean of its divisors is an integer number (46337500).

Almost surely, 2^500010921 is an apocalyptic number.

It is an amenable number.

500010921 is a deficient number, since it is larger than the sum of its proper divisors (241389079).

500010921 is a wasteful number, since it uses less digits than its factorization.

500010921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16085 (or 16079 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 500010921 is about 22360.9239746483. The cubic root of 500010921 is about 793.7063046110.

Adding to 500010921 its reverse (129010005), we get a palindrome (629020926).

The spelling of 500010921 in words is "five hundred million, ten thousand, nine hundred twenty-one".