85471 has 4 divisors (see below), whose sum is σ = 86272. Its totient is φ = 84672.

The previous prime is 85469. The next prime is 85487. The reversal of 85471 is 17458.

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 6-Lehmer number, since φ(85471) divides (85471-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 85471 - 2¹ = 85469 is a prime.

It is a super-3 number, since 3×85471³ = 1873171796826333, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85411) 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, 210 + ... + 463.

It is an arithmetic number, because the mean of its divisors is an integer number (21568).

2⁸⁵⁴⁷¹ is an apocalyptic number.

85471 is a deficient number, since it is larger than the sum of its proper divisors (801).

85471 is a wasteful number, since it uses less digits than its factorization.

85471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800.

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

The square root of 85471 is about 292.3542371850. The cubic root of 85471 is about 44.0493592087.

The spelling of 85471 in words is "eighty-five thousand, four hundred seventy-one".