80950081 has 2 divisors, whose sum is σ = 80950082. Its totient is φ = 80950080.

The previous prime is 80950063. The next prime is 80950091. The reversal of 80950081 is 18005908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70812225 + 10137856 = 8415^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 80950081 - 2²¹ = 78852929 is a prime.

It is a super-2 number, since 2×80950081² = 13105831227813122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80950091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40475040 + 40475041.

It is an arithmetic number, because the mean of its divisors is an integer number (40475041).

Almost surely, 2^80950081 is an apocalyptic number.

It is an amenable number.

80950081 is a deficient number, since it is larger than the sum of its proper divisors (1).

80950081 is an equidigital number, since it uses as much as digits as its factorization.

80950081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 80950081 is about 8997.2262948089. The cubic root of 80950081 is about 432.5859693005.

Adding to 80950081 its reverse (18005908), we get a palindrome (98955989).

The spelling of 80950081 in words is "eighty million, nine hundred fifty thousand, eighty-one".