855080 has 16 divisors (see below), whose sum is σ = 1924020. Its totient is φ = 342016.

The previous prime is 855079. The next prime is 855089. The reversal of 855080 is 80558.

It can be written as a sum of positive squares in 2 ways, for example, as 763876 + 91204 = 874^2 + 302^2 .

It is not an unprimeable number, because it can be changed into a prime (855089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10649 + ... + 10728.

2⁸⁵⁵⁰⁸⁰ is an apocalyptic number.

It is an amenable number.

855080 is an abundant number, since it is smaller than the sum of its proper divisors (1068940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855080 is a wasteful number, since it uses less digits than its factorization.

855080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21388 (or 21384 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 855080 is about 924.7053584791. The cubic root of 855080 is about 94.9151597125.

The spelling of 855080 in words is "eight hundred fifty-five thousand, eighty".