855330 has 32 divisors (see below), whose sum is σ = 2346624. Its totient is φ = 195456.

The previous prime is 855317. The next prime is 855331. The reversal of 855330 is 33558.

855330 = 139² + 140² + ... + 173².

It is a Curzon number.

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 855330.

It is not an unprimeable number, because it can be changed into a prime (855331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1827 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (73332).

2⁸⁵⁵³³⁰ is an apocalyptic number.

855330 is an abundant number, since it is smaller than the sum of its proper divisors (1491294).

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

855330 is a wasteful number, since it uses less digits than its factorization.

855330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 855330 is about 924.8405267937. The cubic root of 855330 is about 94.9244089359.

Adding to 855330 its reverse (33558), we get a palindrome (888888).

The spelling of 855330 in words is "eight hundred fifty-five thousand, three hundred thirty".