500720501 has 2 divisors, whose sum is σ = 500720502. Its totient is φ = 500720500.

The previous prime is 500720489. The next prime is 500720527. The reversal of 500720501 is 105027005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500416900 + 303601 = 22370^2 + 551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500720501 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500720531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250360250 + 250360251.

It is an arithmetic number, because the mean of its divisors is an integer number (250360251).

Almost surely, 2^500720501 is an apocalyptic number.

It is an amenable number.

500720501 is a deficient number, since it is larger than the sum of its proper divisors (1).

500720501 is an equidigital number, since it uses as much as digits as its factorization.

500720501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 500720501 is about 22376.7848673575. The cubic root of 500720501 is about 794.0815843558.

Adding to 500720501 its reverse (105027005), we get a palindrome (605747506).

The spelling of 500720501 in words is "five hundred million, seven hundred twenty thousand, five hundred one".