855031 has 2 divisors, whose sum is σ = 855032. Its totient is φ = 855030.

The previous prime is 854999. The next prime is 855059. The reversal of 855031 is 130558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855031 - 2⁵ = 854999 is a prime.

It is a super-2 number, since 2×855031² = 1462156021922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 854993 and 855011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427515 + 427516.

It is an arithmetic number, because the mean of its divisors is an integer number (427516).

2⁸⁵⁵⁰³¹ is an apocalyptic number.

855031 is a deficient number, since it is larger than the sum of its proper divisors (1).

855031 is an equidigital number, since it uses as much as digits as its factorization.

855031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 855031 is about 924.6788631736. The cubic root of 855031 is about 94.9133466534.

Adding to 855031 its reverse (130558), we get a palindrome (985589).

The spelling of 855031 in words is "eight hundred fifty-five thousand, thirty-one".