80556331 has 2 divisors, whose sum is σ = 80556332. Its totient is φ = 80556330.

The previous prime is 80556323. The next prime is 80556347. The reversal of 80556331 is 13365508.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80556331 - 2³ = 80556323 is a prime.

It is a super-2 number, since 2×80556331² = 12978644928363122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80556293 and 80556302.

It is not a weakly prime, because it can be changed into another prime (80556361) 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, 40278165 + 40278166.

It is an arithmetic number, because the mean of its divisors is an integer number (40278166).

Almost surely, 2^80556331 is an apocalyptic number.

80556331 is a deficient number, since it is larger than the sum of its proper divisors (1).

80556331 is an equidigital number, since it uses as much as digits as its factorization.

80556331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 80556331 is about 8975.3178773791. The cubic root of 80556331 is about 431.8834472809.

The spelling of 80556331 in words is "eighty million, five hundred fifty-six thousand, three hundred thirty-one".