500005001 has 4 divisors (see below), whose sum is σ = 500652612. Its totient is φ = 499357392.

The previous prime is 500004991. The next prime is 500005039. The reversal of 500005001 is 100500005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148254976 + 351750025 = 12176^2 + 18755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500005001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500005061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322646 + ... + 324191.

It is an arithmetic number, because the mean of its divisors is an integer number (125163153).

Almost surely, 2^500005001 is an apocalyptic number.

It is an amenable number.

500005001 is a deficient number, since it is larger than the sum of its proper divisors (647611).

500005001 is an equidigital number, since it uses as much as digits as its factorization.

500005001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647610.

The product of its (nonzero) digits is 25, while the sum is 11.

The square root of 500005001 is about 22360.7916004778. The cubic root of 500005001 is about 793.7031721728.

Adding to 500005001 its reverse (100500005), we get a palindrome (600505006).

The spelling of 500005001 in words is "five hundred million, five thousand, one".