800012501 has 2 divisors, whose sum is σ = 800012502. Its totient is φ = 800012500.

The previous prime is 800012491. The next prime is 800012561. The reversal of 800012501 is 105210008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 576480100 + 223532401 = 24010^2 + 14951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800012501 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 800012501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800012561) 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 as a sum of consecutive naturals, namely, 400006250 + 400006251.

It is an arithmetic number, because the mean of its divisors is an integer number (400006251).

Almost surely, 2^800012501 is an apocalyptic number.

It is an amenable number.

800012501 is a deficient number, since it is larger than the sum of its proper divisors (1).

800012501 is an equidigital number, since it uses as much as digits as its factorization.

800012501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 800012501 is about 28284.4922351454. The cubic root of 800012501 is about 928.3226020725.

Adding to 800012501 its reverse (105210008), we get a palindrome (905222509).

The spelling of 800012501 in words is "eight hundred million, twelve thousand, five hundred one".