500005121 has 32 divisors (see below), whose sum is σ = 666117120. Its totient is φ = 363528000.

The previous prime is 500005081. The next prime is 500005133. The reversal of 500005121 is 121500005.

It is not a de Polignac number, because 500005121 - 2⁶ = 500005057 is a prime.

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 = 500005096 and 500005105.

It is not an unprimeable number, because it can be changed into a prime (500005171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95471 + ... + 100571.

It is an arithmetic number, because the mean of its divisors is an integer number (20816160).

Almost surely, 2^500005121 is an apocalyptic number.

It is an amenable number.

500005121 is a deficient number, since it is larger than the sum of its proper divisors (166111999).

500005121 is a wasteful number, since it uses less digits than its factorization.

500005121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5205.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 500005121 is about 22360.7942837458. The cubic root of 500005121 is about 793.7032356684.

Adding to 500005121 its reverse (121500005), we get a palindrome (621505126).

The spelling of 500005121 in words is "five hundred million, five thousand, one hundred twenty-one".