85751573 has 4 divisors (see below), whose sum is σ = 85858380. Its totient is φ = 85644768.

The previous prime is 85751531. The next prime is 85751591. The reversal of 85751573 is 37515758.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55026724 + 30724849 = 7418^2 + 5543^2 .

It is a cyclic number.

It is not a de Polignac number, because 85751573 - 2¹² = 85747477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85751573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85751593) 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, 52190 + ... + 53807.

It is an arithmetic number, because the mean of its divisors is an integer number (21464595).

Almost surely, 2^85751573 is an apocalyptic number.

It is an amenable number.

85751573 is a deficient number, since it is larger than the sum of its proper divisors (106807).

85751573 is a wasteful number, since it uses less digits than its factorization.

85751573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106806.

The product of its digits is 147000, while the sum is 41.

The square root of 85751573 is about 9260.2145223531. The cubic root of 85751573 is about 440.9750638492.

The spelling of 85751573 in words is "eighty-five million, seven hundred fifty-one thousand, five hundred seventy-three".