85189045 has 4 divisors (see below), whose sum is σ = 102226860. Its totient is φ = 68151232.

The previous prime is 85189043. The next prime is 85189061. The reversal of 85189045 is 54098158.

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 33837489 + 51351556 = 5817^2 + 7166^2 .

It is a cyclic number.

It is not a de Polignac number, because 85189045 - 2¹ = 85189043 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 85188989 and 85189007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85189043) 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, 8518900 + ... + 8518909.

It is an arithmetic number, because the mean of its divisors is an integer number (25556715).

Almost surely, 2^85189045 is an apocalyptic number.

It is an amenable number.

85189045 is a deficient number, since it is larger than the sum of its proper divisors (17037815).

85189045 is a wasteful number, since it uses less digits than its factorization.

85189045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17037814.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 85189045 is about 9229.7911677351. The cubic root of 85189045 is about 440.0086861233.

The spelling of 85189045 in words is "eighty-five million, one hundred eighty-nine thousand, forty-five".