855493 has 4 divisors (see below), whose sum is σ = 861100. Its totient is φ = 849888.

The previous prime is 855467. The next prime is 855499. The reversal of 855493 is 394558.

855493 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 an emirpimes, since its reverse is a distinct semiprime: 394558 = 2 ⋅197279.

It can be written as a sum of positive squares in 2 ways, for example, as 161604 + 693889 = 402^2 + 833^2 .

It is a cyclic number.

It is not a de Polignac number, because 855493 - 2⁵ = 855461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855499) 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, 2568 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (215275).

2⁸⁵⁵⁴⁹³ is an apocalyptic number.

It is an amenable number.

855493 is a deficient number, since it is larger than the sum of its proper divisors (5607).

855493 is a wasteful number, since it uses less digits than its factorization.

855493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606.

The product of its digits is 21600, while the sum is 34.

The square root of 855493 is about 924.9286458965. The cubic root of 855493 is about 94.9304384590.

The spelling of 855493 in words is "eight hundred fifty-five thousand, four hundred ninety-three".