80247851 has 4 divisors (see below), whose sum is σ = 83736912. Its totient is φ = 76758792.

The previous prime is 80247799. The next prime is 80247863. The reversal of 80247851 is 15874208.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80247851 - 2⁶ = 80247787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80247151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1744496 + ... + 1744541.

It is an arithmetic number, because the mean of its divisors is an integer number (20934228).

Almost surely, 2^80247851 is an apocalyptic number.

80247851 is a deficient number, since it is larger than the sum of its proper divisors (3489061).

80247851 is a wasteful number, since it uses less digits than its factorization.

80247851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489060.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 80247851 is about 8958.1164872980. The cubic root of 80247851 is about 431.3314615839.

The spelling of 80247851 in words is "eighty million, two hundred forty-seven thousand, eight hundred fifty-one".