80516081 has 8 divisors (see below), whose sum is σ = 82652064. Its totient is φ = 78392160.

The previous prime is 80516071. The next prime is 80516101. The reversal of 80516081 is 18061508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80516081 - 2¹⁴ = 80499697 is a prime.

It is a super-2 number, since 2×80516081² = 12965678599197122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80516041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11405 + ... + 17061.

It is an arithmetic number, because the mean of its divisors is an integer number (10331508).

Almost surely, 2^80516081 is an apocalyptic number.

It is an amenable number.

80516081 is a deficient number, since it is larger than the sum of its proper divisors (2135983).

80516081 is a wasteful number, since it uses less digits than its factorization.

80516081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 80516081 is about 8973.0753368062. The cubic root of 80516081 is about 431.8115050572.

Adding to 80516081 its reverse (18061508), we get a palindrome (98577589).

The spelling of 80516081 in words is "eighty million, five hundred sixteen thousand, eighty-one".