855529 has 4 divisors (see below), whose sum is σ = 885060. Its totient is φ = 826000.

The previous prime is 855527. The next prime is 855581. The reversal of 855529 is 925558.

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

It can be written as a sum of positive squares in 2 ways, for example, as 393129 + 462400 = 627^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 855529 - 2¹ = 855527 is a prime.

It is a Duffinian number.

855529 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 855494 and 855503.

It is not an unprimeable number, because it can be changed into a prime (855521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14722 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (221265).

2⁸⁵⁵⁵²⁹ is an apocalyptic number.

It is an amenable number.

855529 is a deficient number, since it is larger than the sum of its proper divisors (29531).

855529 is a wasteful number, since it uses less digits than its factorization.

855529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29530.

The product of its digits is 18000, while the sum is 34.

The square root of 855529 is about 924.9481066525. The cubic root of 855529 is about 94.9317700295.

It can be divided in two parts, 85 and 5529, that multiplied together give a triangular number (469965 = T₉₆₉).

The spelling of 855529 in words is "eight hundred fifty-five thousand, five hundred twenty-nine".