80851105 has 8 divisors (see below), whose sum is σ = 99643752. Its totient is φ = 62932608.

The previous prime is 80851091. The next prime is 80851109. The reversal of 80851105 is 50115808.

It can be written as a sum of positive squares in 4 ways, for example, as 5716881 + 75134224 = 2391^2 + 8668^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80851105 - 2¹⁵ = 80818337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80851109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218332 + ... + 218701.

It is an arithmetic number, because the mean of its divisors is an integer number (12455469).

Almost surely, 2^80851105 is an apocalyptic number.

It is an amenable number.

80851105 is a deficient number, since it is larger than the sum of its proper divisors (18792647).

80851105 is a wasteful number, since it uses less digits than its factorization.

80851105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437075.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 80851105 is about 8991.7242506652. The cubic root of 80851105 is about 432.4095927395.

The spelling of 80851105 in words is "eighty million, eight hundred fifty-one thousand, one hundred five".