80515271 has 2 divisors, whose sum is σ = 80515272. Its totient is φ = 80515270.

The previous prime is 80515261. The next prime is 80515289. The reversal of 80515271 is 17251508.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80515271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80515231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40257635 + 40257636.

It is an arithmetic number, because the mean of its divisors is an integer number (40257636).

Almost surely, 2^80515271 is an apocalyptic number.

80515271 is a deficient number, since it is larger than the sum of its proper divisors (1).

80515271 is an equidigital number, since it uses as much as digits as its factorization.

80515271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 80515271 is about 8973.0302016654. The cubic root of 80515271 is about 431.8100570297.

Adding to 80515271 its reverse (17251508), we get a palindrome (97766779).

The spelling of 80515271 in words is "eighty million, five hundred fifteen thousand, two hundred seventy-one".