80555198 has 4 divisors (see below), whose sum is σ = 120832800. Its totient is φ = 40277598.

The previous prime is 80555173. The next prime is 80555219. The reversal of 80555198 is 89155508.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20138798 + ... + 20138801.

It is an arithmetic number, because the mean of its divisors is an integer number (30208200).

Almost surely, 2^80555198 is an apocalyptic number.

80555198 is a deficient number, since it is larger than the sum of its proper divisors (40277602).

80555198 is a wasteful number, since it uses less digits than its factorization.

80555198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40277601.

The product of its (nonzero) digits is 72000, while the sum is 41.

The square root of 80555198 is about 8975.2547596155. The cubic root of 80555198 is about 431.8814225021.

The spelling of 80555198 in words is "eighty million, five hundred fifty-five thousand, one hundred ninety-eight".