85173529 has 4 divisors (see below), whose sum is σ = 97341184. Its totient is φ = 73005876.

The previous prime is 85173527. The next prime is 85173547. The reversal of 85173529 is 92537158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85173529 - 2¹ = 85173527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85173491 and 85173500.

It is not an unprimeable number, because it can be changed into a prime (85173527) 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, 6083817 + ... + 6083830.

It is an arithmetic number, because the mean of its divisors is an integer number (24335296).

Almost surely, 2^85173529 is an apocalyptic number.

It is an amenable number.

85173529 is a deficient number, since it is larger than the sum of its proper divisors (12167655).

85173529 is a wasteful number, since it uses less digits than its factorization.

85173529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12167654.

The product of its digits is 75600, while the sum is 40.

The square root of 85173529 is about 9228.9505903976. The cubic root of 85173529 is about 439.9819706800.

The spelling of 85173529 in words is "eighty-five million, one hundred seventy-three thousand, five hundred twenty-nine".