80771291 has 2 divisors, whose sum is σ = 80771292. Its totient is φ = 80771290.

The previous prime is 80771287. The next prime is 80771297. The reversal of 80771291 is 19217708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80771291 - 2² = 80771287 is a prime.

It is not a weakly prime, because it can be changed into another prime (80771297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40385645 + 40385646.

It is an arithmetic number, because the mean of its divisors is an integer number (40385646).

Almost surely, 2^80771291 is an apocalyptic number.

80771291 is a deficient number, since it is larger than the sum of its proper divisors (1).

80771291 is an equidigital number, since it uses as much as digits as its factorization.

80771291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 80771291 is about 8987.2849626570. The cubic root of 80771291 is about 432.2672582511.

Adding to 80771291 its reverse (19217708), we get a palindrome (99988999).

The spelling of 80771291 in words is "eighty million, seven hundred seventy-one thousand, two hundred ninety-one".