800045161 has 2 divisors, whose sum is σ = 800045162. Its totient is φ = 800045160.

The previous prime is 800045107. The next prime is 800045173. The reversal of 800045161 is 161540008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 786465936 + 13579225 = 28044^2 + 3685^2 .

It is a cyclic number.

It is not a de Polignac number, because 800045161 - 2¹⁵ = 800012393 is a prime.

It is not a weakly prime, because it can be changed into another prime (800045461) 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, 400022580 + 400022581.

It is an arithmetic number, because the mean of its divisors is an integer number (400022581).

Almost surely, 2^800045161 is an apocalyptic number.

It is an amenable number.

800045161 is a deficient number, since it is larger than the sum of its proper divisors (1).

800045161 is an equidigital number, since it uses as much as digits as its factorization.

800045161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 800045161 is about 28285.0695774290. The cubic root of 800045161 is about 928.3352346266.

Adding to 800045161 its reverse (161540008), we get a palindrome (961585169).

The spelling of 800045161 in words is "eight hundred million, forty-five thousand, one hundred sixty-one".