857401 has 4 divisors (see below), whose sum is σ = 880612. Its totient is φ = 834192.

The previous prime is 857369. The next prime is 857407. The reversal of 857401 is 104758.

857401 = 69² + 70² + ... + 142².

857401 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: 104758 = 2 ⋅52379.

It can be written as a sum of positive squares in 2 ways, for example, as 331776 + 525625 = 576^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 857401 - 2⁵ = 857369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857407) 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, 11550 + ... + 11623.

It is an arithmetic number, because the mean of its divisors is an integer number (220153).

2⁸⁵⁷⁴⁰¹ is an apocalyptic number.

It is an amenable number.

857401 is a deficient number, since it is larger than the sum of its proper divisors (23211).

857401 is a wasteful number, since it uses less digits than its factorization.

857401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23210.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 857401 is about 925.9595023542. The cubic root of 857401 is about 95.0009602858. Note that the first 3 decimals are identical.

The spelling of 857401 in words is "eight hundred fifty-seven thousand, four hundred one".