80051971 has 2 divisors, whose sum is σ = 80051972. Its totient is φ = 80051970.

The previous prime is 80051969. The next prime is 80051981. The reversal of 80051971 is 17915008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80051971 - 2¹ = 80051969 is a prime.

Together with 80051969, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80051911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40025985 + 40025986.

It is an arithmetic number, because the mean of its divisors is an integer number (40025986).

Almost surely, 2^80051971 is an apocalyptic number.

80051971 is a deficient number, since it is larger than the sum of its proper divisors (1).

80051971 is an equidigital number, since it uses as much as digits as its factorization.

80051971 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 80051971 is about 8947.1767055312. The cubic root of 80051971 is about 430.9802245795.

Adding to 80051971 its reverse (17915008), we get a palindrome (97966979).

The spelling of 80051971 in words is "eighty million, fifty-one thousand, nine hundred seventy-one".