857445 has 8 divisors (see below), whose sum is σ = 1371936. Its totient is φ = 457296.

The previous prime is 857431. The next prime is 857453. The reversal of 857445 is 544758.

857445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 857445 - 2¹⁰ = 856421 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28567 + ... + 28596.

It is an arithmetic number, because the mean of its divisors is an integer number (171492).

2⁸⁵⁷⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

857445 is a deficient number, since it is larger than the sum of its proper divisors (514491).

857445 is a wasteful number, since it uses less digits than its factorization.

857445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57171.

The product of its digits is 22400, while the sum is 33.

The square root of 857445 is about 925.9832611878. The cubic root of 857445 is about 95.0025853405.

The spelling of 857445 in words is "eight hundred fifty-seven thousand, four hundred forty-five".