80045971 has 2 divisors, whose sum is σ = 80045972. Its totient is φ = 80045970.

The previous prime is 80045963. The next prime is 80045989. The reversal of 80045971 is 17954008.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80045971 - 2³ = 80045963 is a prime.

It is not a weakly prime, because it can be changed into another prime (80045921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40022985 + 40022986.

It is an arithmetic number, because the mean of its divisors is an integer number (40022986).

Almost surely, 2^80045971 is an apocalyptic number.

80045971 is a deficient number, since it is larger than the sum of its proper divisors (1).

80045971 is an equidigital number, since it uses as much as digits as its factorization.

80045971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 80045971 is about 8946.8413979460. The cubic root of 80045971 is about 430.9694567999.

Adding to 80045971 its reverse (17954008), we get a palindrome (97999979).

The spelling of 80045971 in words is "eighty million, forty-five thousand, nine hundred seventy-one".