80915071 has 2 divisors, whose sum is σ = 80915072. Its totient is φ = 80915070.

The previous prime is 80914987. The next prime is 80915083. The reversal of 80915071 is 17051908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80915071 - 2¹³ = 80906879 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 (80916071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40457535 + 40457536.

It is an arithmetic number, because the mean of its divisors is an integer number (40457536).

Almost surely, 2^80915071 is an apocalyptic number.

80915071 is a deficient number, since it is larger than the sum of its proper divisors (1).

80915071 is an equidigital number, since it uses as much as digits as its factorization.

80915071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 80915071 is about 8995.2804847876. The cubic root of 80915071 is about 432.5235974517.

Adding to 80915071 its reverse (17051908), we get a palindrome (97966979).

The spelling of 80915071 in words is "eighty million, nine hundred fifteen thousand, seventy-one".