855552 has 40 divisors (see below), whose sum is σ = 2283336. Its totient is φ = 284672.

The previous prime is 855527. The next prime is 855581. The reversal of 855552 is 255558.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

855552 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258 + ... + 1814.

2⁸⁵⁵⁵⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141668).

855552 is an abundant number, since it is smaller than the sum of its proper divisors (1427784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855552 is an equidigital number, since it uses as much as digits as its factorization.

855552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 562 counting only the distinct ones).

The product of its digits is 10000, while the sum is 30.

The square root of 855552 is about 924.9605396989. The cubic root of 855552 is about 94.9326207356.

The spelling of 855552 in words is "eight hundred fifty-five thousand, five hundred fifty-two".