855320 has 16 divisors (see below), whose sum is σ = 1924560. Its totient is φ = 342112.

The previous prime is 855317. The next prime is 855331. The reversal of 855320 is 23558.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10652 + ... + 10731.

It is an arithmetic number, because the mean of its divisors is an integer number (120285).

2⁸⁵⁵³²⁰ is an apocalyptic number.

It is an amenable number.

855320 is an abundant number, since it is smaller than the sum of its proper divisors (1069240).

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

855320 is a wasteful number, since it uses less digits than its factorization.

855320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21394 (or 21390 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 855320 is about 924.8351204404. The cubic root of 855320 is about 94.9240390016.

Adding to 855320 its reverse (23558), we get a palindrome (878878).

The spelling of 855320 in words is "eight hundred fifty-five thousand, three hundred twenty".