80134561 has 6 divisors (see below), whose sum is σ = 86773110. Its totient is φ = 73970208.

The previous prime is 80134531. The next prime is 80134589. The reversal of 80134561 is 16543108.

It can be written as a sum of positive squares in 3 ways, for example, as 1918225 + 78216336 = 1385^2 + 8844^2 .

It is not a de Polignac number, because 80134561 - 2⁵ = 80134529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80134501) 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 5 ways as a sum of consecutive naturals, for example, 236916 + ... + 237253.

It is an arithmetic number, because the mean of its divisors is an integer number (14462185).

Almost surely, 2^80134561 is an apocalyptic number.

It is an amenable number.

80134561 is a deficient number, since it is larger than the sum of its proper divisors (6638549).

80134561 is a wasteful number, since it uses less digits than its factorization.

80134561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474195 (or 474182 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 80134561 is about 8951.7909381308. The cubic root of 80134561 is about 431.1283884213.

Adding to 80134561 its reverse (16543108), we get a palindrome (96677669).

The spelling of 80134561 in words is "eighty million, one hundred thirty-four thousand, five hundred sixty-one".