855057 has 16 divisors (see below), whose sum is σ = 1372160. Its totient is φ = 462672.

The previous prime is 855031. The next prime is 855059. The reversal of 855057 is 750558.

It is a happy number.

It is not a de Polignac number, because 855057 - 2⁶ = 854993 is a prime.

It is a super-2 number, since 2×855057² = 1462244946498, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) 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.

855057 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (855059) 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 15 ways as a sum of consecutive naturals, for example, 673 + ... + 1470.

It is an arithmetic number, because the mean of its divisors is an integer number (85760).

2⁸⁵⁵⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

855057 is a deficient number, since it is larger than the sum of its proper divisors (517103).

855057 is a wasteful number, since it uses less digits than its factorization.

855057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172.

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 855057 is about 924.6929220017. The cubic root of 855057 is about 94.9143086934.

The spelling of 855057 in words is "eight hundred fifty-five thousand, fifty-seven".