500000001 has 16 divisors (see below), whose sum is σ = 683037696. Its totient is φ = 325167696.

The previous prime is 499999993. The next prime is 500000003. The reversal of 500000001 is 100000005.

It is a trimorphic number since its cube, 125000000750000001500000001, ends in 500000001.

It is not a de Polignac number, because 500000001 - 2³ = 499999993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (500000003) 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, 124836 + ... + 128778.

It is an arithmetic number, because the mean of its divisors is an integer number (42689856).

Almost surely, 2^500000001 is an apocalyptic number.

It is an amenable number.

500000001 is a deficient number, since it is larger than the sum of its proper divisors (183037695).

500000001 is a wasteful number, since it uses less digits than its factorization.

500000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972.

The product of its (nonzero) digits is 5, while the sum is 6.

The square root of 500000001 is about 22360.6797973586. The cubic root of 500000001 is about 793.7005265132.

Adding to 500000001 its reverse (100000005), we get a palindrome (600000006).

The spelling of 500000001 in words is "five hundred million, one", and thus it is an aban number.