855055 has 16 divisors (see below), whose sum is σ = 1086624. Its totient is φ = 645120.

The previous prime is 855031. The next prime is 855059. The reversal of 855055 is 550558.

855055 = 375² + 376² + ... + 380².

It is not a de Polignac number, because 855055 - 2⁷ = 854927 is a prime.

It is a super-2 number, since 2×855055² = 1462238106050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8767 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (67914).

2⁸⁵⁵⁰⁵⁵ is an apocalyptic number.

855055 is a deficient number, since it is larger than the sum of its proper divisors (231569).

855055 is a wasteful number, since it uses less digits than its factorization.

855055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 855055 is about 924.6918405610. The cubic root of 855055 is about 94.9142346910.

The spelling of 855055 in words is "eight hundred fifty-five thousand, fifty-five".