85112471 has 4 divisors (see below), whose sum is σ = 85544712. Its totient is φ = 84680232.

The previous prime is 85112431. The next prime is 85112473. The reversal of 85112471 is 17421158.

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 85112471 - 2¹⁰ = 85111447 is a prime.

It is a super-3 number, since 3×85112471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85112473) 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, 215825 + ... + 216218.

It is an arithmetic number, because the mean of its divisors is an integer number (21386178).

Almost surely, 2^85112471 is an apocalyptic number.

85112471 is a deficient number, since it is larger than the sum of its proper divisors (432241).

85112471 is a wasteful number, since it uses less digits than its factorization.

85112471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432240.

The product of its digits is 2240, while the sum is 29.

The square root of 85112471 is about 9225.6420372785. The cubic root of 85112471 is about 439.8768095208.

The spelling of 85112471 in words is "eighty-five million, one hundred twelve thousand, four hundred seventy-one".