855530 has 16 divisors (see below), whose sum is σ = 1658664. Its totient is φ = 315840.

The previous prime is 855527. The next prime is 855581. The reversal of 855530 is 35558.

It can be written as a sum of positive squares in 4 ways, for example, as 418609 + 436921 = 647^2 + 661^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 855530.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3161 + ... + 3420.

2⁸⁵⁵⁵³⁰ is an apocalyptic number.

855530 is a deficient number, since it is larger than the sum of its proper divisors (803134).

855530 is a wasteful number, since it uses less digits than its factorization.

855530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 855530 is about 924.9486472232. The cubic root of 855530 is about 94.9318070170.

The spelling of 855530 in words is "eight hundred fifty-five thousand, five hundred thirty".