57403 has 4 divisors (see below), whose sum is σ = 57960. Its totient is φ = 56848.

The previous prime is 57397. The next prime is 57413. The reversal of 57403 is 30475.

57403 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 brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 57403 - 2⁹ = 56891 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (57413) 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, 73 + ... + 346.

It is an arithmetic number, because the mean of its divisors is an integer number (14490).

2⁵⁷⁴⁰³ is an apocalyptic number.

57403 is a deficient number, since it is larger than the sum of its proper divisors (557).

57403 is a wasteful number, since it uses less digits than its factorization.

57403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 57403 is about 239.5892318114. The cubic root of 57403 is about 38.5754969907.

Adding to 57403 its reverse (30475), we get a palindrome (87878).

The spelling of 57403 in words is "fifty-seven thousand, four hundred three".