500101001 has 4 divisors (see below), whose sum is σ = 501494400. Its totient is φ = 498707604.

The previous prime is 500100989. The next prime is 500101061. The reversal of 500101001 is 100101005.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 500101001 - 2²⁶ = 432992137 is a prime.

It is a super-2 number, since 2×500101001² = 500202022402404002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 500101001.

It is not an unprimeable number, because it can be changed into a prime (500101061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696161 + ... + 696878.

It is an arithmetic number, because the mean of its divisors is an integer number (125373600).

Almost surely, 2^500101001 is an apocalyptic number.

It is an amenable number.

500101001 is a deficient number, since it is larger than the sum of its proper divisors (1393399).

500101001 is a wasteful number, since it uses less digits than its factorization.

500101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393398.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 500101001 is about 22362.9381119745. The cubic root of 500101001 is about 793.7539654172.

Adding to 500101001 its reverse (100101005), we get a palindrome (600202006).

The spelling of 500101001 in words is "five hundred million, one hundred one thousand, one".