800333081 has 2 divisors, whose sum is σ = 800333082. Its totient is φ = 800333080.

The previous prime is 800333077. The next prime is 800333117. The reversal of 800333081 is 180333008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507375625 + 292957456 = 22525^2 + 17116^2 .

It is a cyclic number.

It is not a de Polignac number, because 800333081 - 2² = 800333077 is a prime.

It is a super-2 number, since 2×800333081² = 1281066081085905122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 800333081.

It is not a weakly prime, because it can be changed into another prime (800333041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400166540 + 400166541.

It is an arithmetic number, because the mean of its divisors is an integer number (400166541).

Almost surely, 2^800333081 is an apocalyptic number.

It is an amenable number.

800333081 is a deficient number, since it is larger than the sum of its proper divisors (1).

800333081 is an equidigital number, since it uses as much as digits as its factorization.

800333081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 800333081 is about 28290.1587305550. The cubic root of 800333081 is about 928.4465842673.

Adding to 800333081 its reverse (180333008), we get a palindrome (980666089).

The spelling of 800333081 in words is "eight hundred million, three hundred thirty-three thousand, eighty-one".