855957 has 8 divisors (see below), whose sum is σ = 1169280. Its totient is φ = 556640.

The previous prime is 855947. The next prime is 855983. The reversal of 855957 is 759558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 855957 - 2¹⁶ = 790421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855937) 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 7 ways as a sum of consecutive naturals, for example, 3357 + ... + 3602.

It is an arithmetic number, because the mean of its divisors is an integer number (146160).

2⁸⁵⁵⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

855957 is a deficient number, since it is larger than the sum of its proper divisors (313323).

855957 is a wasteful number, since it uses less digits than its factorization.

855957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7003.

The product of its digits is 63000, while the sum is 39.

The square root of 855957 is about 925.1794420544. The cubic root of 855957 is about 94.9475980626.

The spelling of 855957 in words is "eight hundred fifty-five thousand, nine hundred fifty-seven".