85171403 has 4 divisors (see below), whose sum is σ = 85599600. Its totient is φ = 84743208.

The previous prime is 85171367. The next prime is 85171409. The reversal of 85171403 is 30417158.

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 85171403 - 2⁸ = 85171147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85171409) 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, 213800 + ... + 214197.

It is an arithmetic number, because the mean of its divisors is an integer number (21399900).

Almost surely, 2^85171403 is an apocalyptic number.

85171403 is a deficient number, since it is larger than the sum of its proper divisors (428197).

85171403 is a wasteful number, since it uses less digits than its factorization.

85171403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428196.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 85171403 is about 9228.8354086526. The cubic root of 85171403 is about 439.9783098812.

The spelling of 85171403 in words is "eighty-five million, one hundred seventy-one thousand, four hundred three".