80502161 has 4 divisors (see below), whose sum is σ = 80635392. Its totient is φ = 80368932.

The previous prime is 80502113. The next prime is 80502181. The reversal of 80502161 is 16120508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80502161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80502101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65705 + ... + 66918.

It is an arithmetic number, because the mean of its divisors is an integer number (20158848).

Almost surely, 2^80502161 is an apocalyptic number.

It is an amenable number.

80502161 is a deficient number, since it is larger than the sum of its proper divisors (133231).

80502161 is a wasteful number, since it uses less digits than its factorization.

80502161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133230.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 80502161 is about 8972.2996494767. The cubic root of 80502161 is about 431.7866190862.

Adding to 80502161 its reverse (16120508), we get a palindrome (96622669).

The spelling of 80502161 in words is "eighty million, five hundred two thousand, one hundred sixty-one".