80280081 has 18 divisors (see below), whose sum is σ = 134893122. Its totient is φ = 45874080.

The previous prime is 80280043. The next prime is 80280113. The reversal of 80280081 is 18008208.

It can be written as a sum of positive squares in only one way, i.e., 57153600 + 23126481 = 7560^2 + 4809^2 .

It is not a de Polignac number, because 80280081 - 2²³ = 71891473 is a prime.

It is a super-2 number, since 2×80280081² = 12889782810733122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80280181) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 90580 + ... + 91461.

Almost surely, 2^80280081 is an apocalyptic number.

It is an amenable number.

80280081 is a deficient number, since it is larger than the sum of its proper divisors (54613041).

80280081 is a wasteful number, since it uses less digits than its factorization.

80280081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182061 (or 182051 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 80280081 is about 8959.9152339740. The cubic root of 80280081 is about 431.3891991727.

Adding to 80280081 its reverse (18008208), we get a palindrome (98288289).

The spelling of 80280081 in words is "eighty million, two hundred eighty thousand, eighty-one".