85403 has 4 divisors (see below), whose sum is σ = 87528. Its totient is φ = 83280.

The previous prime is 85381. The next prime is 85411. The reversal of 85403 is 30458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85403 - 2⁸ = 85147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85453) 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, 1001 + ... + 1082.

It is an arithmetic number, because the mean of its divisors is an integer number (21882).

2⁸⁵⁴⁰³ is an apocalyptic number.

85403 is a deficient number, since it is larger than the sum of its proper divisors (2125).

85403 is a wasteful number, since it uses less digits than its factorization.

85403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 85403 is about 292.2379167733. The cubic root of 85403 is about 44.0376743443.

Subtracting from 85403 its reverse (30458), we obtain a palindrome (54945).

The spelling of 85403 in words is "eighty-five thousand, four hundred three".