855953 has 4 divisors (see below), whose sum is σ = 978240. Its totient is φ = 733668.

The previous prime is 855947. The next prime is 855983. The reversal of 855953 is 359558.

855953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 359558 = 2 ⋅179779.

It is a cyclic number.

It is not a de Polignac number, because 855953 - 2⁴ = 855937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61133 + ... + 61146.

It is an arithmetic number, because the mean of its divisors is an integer number (244560).

2⁸⁵⁵⁹⁵³ is an apocalyptic number.

It is an amenable number.

855953 is a deficient number, since it is larger than the sum of its proper divisors (122287).

855953 is a wasteful number, since it uses less digits than its factorization.

855953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122286.

The product of its digits is 27000, while the sum is 35.

The square root of 855953 is about 925.1772803090. The cubic root of 855953 is about 94.9474501615.

The spelling of 855953 in words is "eight hundred fifty-five thousand, nine hundred fifty-three".