80256571 has 2 divisors, whose sum is σ = 80256572. Its totient is φ = 80256570.

The previous prime is 80256569. The next prime is 80256599. The reversal of 80256571 is 17565208.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80256571 - 2¹ = 80256569 is a prime.

It is a super-2 number, since 2×80256571² = 12882234377356082, which contains 22 as substring.

Together with 80256569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80256511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40128285 + 40128286.

It is an arithmetic number, because the mean of its divisors is an integer number (40128286).

Almost surely, 2^80256571 is an apocalyptic number.

80256571 is a deficient number, since it is larger than the sum of its proper divisors (1).

80256571 is an equidigital number, since it uses as much as digits as its factorization.

80256571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 80256571 is about 8958.6031835326. The cubic root of 80256571 is about 431.3470843246.

The spelling of 80256571 in words is "eighty million, two hundred fifty-six thousand, five hundred seventy-one".