800045287 has 2 divisors, whose sum is σ = 800045288. Its totient is φ = 800045286.

The previous prime is 800045273. The next prime is 800045321. The reversal of 800045287 is 782540008.

It is an a-pointer prime, because the next prime (800045321) can be obtained adding 800045287 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800045287 is a prime.

It is a super-2 number, since 2×800045287² = 1280144922501824738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800045237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400022643 + 400022644.

It is an arithmetic number, because the mean of its divisors is an integer number (400022644).

Almost surely, 2^800045287 is an apocalyptic number.

800045287 is a deficient number, since it is larger than the sum of its proper divisors (1).

800045287 is an equidigital number, since it uses as much as digits as its factorization.

800045287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 800045287 is about 28285.0718047524. The cubic root of 800045287 is about 928.3352833615.

The spelling of 800045287 in words is "eight hundred million, forty-five thousand, two hundred eighty-seven".