500121601 has 8 divisors (see below), whose sum is σ = 573960960. Its totient is φ = 426880608.

The previous prime is 500121581. The next prime is 500121619. The reversal of 500121601 is 106121005.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 500121601 - 2⁵ = 500121569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500121641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147796 + ... + 151141.

It is an arithmetic number, because the mean of its divisors is an integer number (71745120).

Almost surely, 2^500121601 is an apocalyptic number.

It is an amenable number.

500121601 is a deficient number, since it is larger than the sum of its proper divisors (73839359).

500121601 is a wasteful number, since it uses less digits than its factorization.

500121601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299183.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 500121601 is about 22363.3986907178. The cubic root of 500121601 is about 793.7648639538.

Adding to 500121601 its reverse (106121005), we get a palindrome (606242606).

The spelling of 500121601 in words is "five hundred million, one hundred twenty-one thousand, six hundred one".