800504851 has 2 divisors, whose sum is σ = 800504852. Its totient is φ = 800504850.

The previous prime is 800504801. The next prime is 800504863. The reversal of 800504851 is 158405008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 800504851 - 2¹¹ = 800502803 is a prime.

It is not a weakly prime, because it can be changed into another prime (800504801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400252425 + 400252426.

It is an arithmetic number, because the mean of its divisors is an integer number (400252426).

Almost surely, 2^800504851 is an apocalyptic number.

800504851 is a deficient number, since it is larger than the sum of its proper divisors (1).

800504851 is an equidigital number, since it uses as much as digits as its factorization.

800504851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 800504851 is about 28293.1944290495. The cubic root of 800504851 is about 928.5130015568.

Adding to 800504851 its reverse (158405008), we get a palindrome (958909859).

The spelling of 800504851 in words is "eight hundred million, five hundred four thousand, eight hundred fifty-one".