57406 has 4 divisors (see below), whose sum is σ = 86112. Its totient is φ = 28702.

The previous prime is 57397. The next prime is 57413. The reversal of 57406 is 60475.

57406 is nontrivially palindromic in base 15.

57406 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.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

57406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14350 + ... + 14353.

It is an arithmetic number, because the mean of its divisors is an integer number (21528).

2⁵⁷⁴⁰⁶ is an apocalyptic number.

57406 is a deficient number, since it is larger than the sum of its proper divisors (28706).

57406 is a wasteful number, since it uses less digits than its factorization.

57406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28705.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 57406 is about 239.5954924451. The cubic root of 57406 is about 38.5761689908.

The spelling of 57406 in words is "fifty-seven thousand, four hundred six".