80203851 has 96 divisors (see below), whose sum is σ = 153661440. Its totient is φ = 40940640.

The previous prime is 80203811. The next prime is 80203861. The reversal of 80203851 is 15830208.

It is a happy number.

It is not a de Polignac number, because 80203851 - 2¹⁰ = 80202827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80203811) 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 95 ways as a sum of consecutive naturals, for example, 2587206 + ... + 2587236.

It is an arithmetic number, because the mean of its divisors is an integer number (1600640).

Almost surely, 2^80203851 is an apocalyptic number.

80203851 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

80203851 is a deficient number, since it is larger than the sum of its proper divisors (73457589).

80203851 is an equidigital number, since it uses as much as digits as its factorization.

80203851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 80203851 is about 8955.6602771655. The cubic root of 80203851 is about 431.2526139728.

The spelling of 80203851 in words is "eighty million, two hundred three thousand, eight hundred fifty-one".