855355 has 16 divisors (see below), whose sum is σ = 1127520. Its totient is φ = 620032.

The previous prime is 855331. The next prime is 855359. The reversal of 855355 is 553558.

It is a cyclic number.

It is not a de Polignac number, because 855355 - 2¹³ = 847163 is a prime.

It is an Ulam number.

855355 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (855359) 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 15 ways as a sum of consecutive naturals, for example, 2292 + ... + 2638.

It is an arithmetic number, because the mean of its divisors is an integer number (70470).

2⁸⁵⁵³⁵⁵ is an apocalyptic number.

855355 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

855355 is a deficient number, since it is larger than the sum of its proper divisors (272165).

855355 is a wasteful number, since it uses less digits than its factorization.

855355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398.

The product of its digits is 15000, while the sum is 31.

The square root of 855355 is about 924.8540425386. The cubic root of 855355 is about 94.9253337591.

The spelling of 855355 in words is "eight hundred fifty-five thousand, three hundred fifty-five".