80561303 has 2 divisors, whose sum is σ = 80561304. Its totient is φ = 80561302.

The previous prime is 80561279. The next prime is 80561323. The reversal of 80561303 is 30316508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80561303 - 2¹⁰ = 80560279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80561323) 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 as a sum of consecutive naturals, namely, 40280651 + 40280652.

It is an arithmetic number, because the mean of its divisors is an integer number (40280652).

Almost surely, 2^80561303 is an apocalyptic number.

80561303 is a deficient number, since it is larger than the sum of its proper divisors (1).

80561303 is an equidigital number, since it uses as much as digits as its factorization.

80561303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 80561303 is about 8975.5948549386. The cubic root of 80561303 is about 431.8923324932.

The spelling of 80561303 in words is "eighty million, five hundred sixty-one thousand, three hundred three".