80547218 has 4 divisors (see below), whose sum is σ = 120820830. Its totient is φ = 40273608.

The previous prime is 80547209. The next prime is 80547221. The reversal of 80547218 is 81274508.

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

It can be written as a sum of positive squares in only one way, i.e., 48205249 + 32341969 = 6943^2 + 5687^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20136803 + ... + 20136806.

Almost surely, 2^80547218 is an apocalyptic number.

80547218 is a deficient number, since it is larger than the sum of its proper divisors (40273612).

80547218 is a wasteful number, since it uses less digits than its factorization.

80547218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40273611.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 80547218 is about 8974.8101929790. The cubic root of 80547218 is about 431.8671609454.

The spelling of 80547218 in words is "eighty million, five hundred forty-seven thousand, two hundred eighteen".