80515161 has 16 divisors (see below), whose sum is σ = 119907520. Its totient is φ = 53395200.

The previous prime is 80515159. The next prime is 80515189. The reversal of 80515161 is 16151508.

It is not a de Polignac number, because 80515161 - 2¹ = 80515159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80515151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2515 + ... + 12936.

It is an arithmetic number, because the mean of its divisors is an integer number (7494220).

Almost surely, 2^80515161 is an apocalyptic number.

It is an amenable number.

80515161 is a deficient number, since it is larger than the sum of its proper divisors (39392359).

80515161 is a wasteful number, since it uses less digits than its factorization.

80515161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15653 (or 15647 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 80515161 is about 8973.0240721844. The cubic root of 80515161 is about 431.8098603832.

Adding to 80515161 its reverse (16151508), we get a palindrome (96666669).

The spelling of 80515161 in words is "eighty million, five hundred fifteen thousand, one hundred sixty-one".