80807081 has 2 divisors, whose sum is σ = 80807082. Its totient is φ = 80807080.

The previous prime is 80807047. The next prime is 80807099. The reversal of 80807081 is 18070808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42367081 + 38440000 = 6509^2 + 6200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80807081 is a prime.

It is a super-2 number, since 2×80807081² = 13059568679481122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80807011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40403540 + 40403541.

It is an arithmetic number, because the mean of its divisors is an integer number (40403541).

Almost surely, 2^80807081 is an apocalyptic number.

It is an amenable number.

80807081 is a deficient number, since it is larger than the sum of its proper divisors (1).

80807081 is an equidigital number, since it uses as much as digits as its factorization.

80807081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 80807081 is about 8989.2758885241. The cubic root of 80807081 is about 432.3310951271.

Adding to 80807081 its reverse (18070808), we get a palindrome (98877889).

The spelling of 80807081 in words is "eighty million, eight hundred seven thousand, eighty-one".