80559361 has 4 divisors (see below), whose sum is σ = 83337300. Its totient is φ = 77781424.

The previous prime is 80559343. The next prime is 80559371. The reversal of 80559361 is 16395508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20976400 + 59582961 = 4580^2 + 7719^2 .

It is a cyclic number.

It is not a de Polignac number, because 80559361 - 2²⁵ = 47004929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80559361.

It is not an unprimeable number, because it can be changed into a prime (80559331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388926 + ... + 1388983.

It is an arithmetic number, because the mean of its divisors is an integer number (20834325).

Almost surely, 2^80559361 is an apocalyptic number.

It is an amenable number.

80559361 is a deficient number, since it is larger than the sum of its proper divisors (2777939).

80559361 is a wasteful number, since it uses less digits than its factorization.

80559361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777938.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 80559361 is about 8975.4866720418. The cubic root of 80559361 is about 431.8888620857. Note that the first 4 decimals are identical.

The spelling of 80559361 in words is "eighty million, five hundred fifty-nine thousand, three hundred sixty-one".