80842855 has 4 divisors (see below), whose sum is σ = 97011432. Its totient is φ = 64674280.

The previous prime is 80842849. The next prime is 80842877. The reversal of 80842855 is 55824808.

It is a happy number.

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

It is not a de Polignac number, because 80842855 - 2³ = 80842847 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8084281 + ... + 8084290.

It is an arithmetic number, because the mean of its divisors is an integer number (24252858).

Almost surely, 2^80842855 is an apocalyptic number.

80842855 is a deficient number, since it is larger than the sum of its proper divisors (16168577).

80842855 is a wasteful number, since it uses less digits than its factorization.

80842855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16168576.

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 80842855 is about 8991.2654837904. The cubic root of 80842855 is about 432.3948846310.

The spelling of 80842855 in words is "eighty million, eight hundred forty-two thousand, eight hundred fifty-five".