85751471 has 8 divisors (see below), whose sum is σ = 92484000. Its totient is φ = 79038432.

The previous prime is 85751467. The next prime is 85751473. The reversal of 85751471 is 17415758.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85751471 - 2² = 85751467 is a prime.

It is a super-3 number, since 3×85751471³ (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 (85751473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5030 + ... + 14028.

It is an arithmetic number, because the mean of its divisors is an integer number (11560500).

Almost surely, 2^85751471 is an apocalyptic number.

85751471 is a deficient number, since it is larger than the sum of its proper divisors (6732529).

85751471 is a wasteful number, since it uses less digits than its factorization.

85751471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9745.

The product of its digits is 39200, while the sum is 38.

The square root of 85751471 is about 9260.2090149197. The cubic root of 85751471 is about 440.9748890051.

The spelling of 85751471 in words is "eighty-five million, seven hundred fifty-one thousand, four hundred seventy-one".