85145755 has 4 divisors (see below), whose sum is σ = 102174912. Its totient is φ = 68116600.

The previous prime is 85145743. The next prime is 85145771. The reversal of 85145755 is 55754158.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55754158 = 2 ⋅27877079.

It is not a de Polignac number, because 85145755 - 2⁹ = 85145243 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8514571 + ... + 8514580.

It is an arithmetic number, because the mean of its divisors is an integer number (25543728).

Almost surely, 2^85145755 is an apocalyptic number.

85145755 is a deficient number, since it is larger than the sum of its proper divisors (17029157).

85145755 is a wasteful number, since it uses less digits than its factorization.

85145755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17029156.

The product of its digits is 140000, while the sum is 40.

The square root of 85145755 is about 9227.4457462507. The cubic root of 85145755 is about 439.9341413136.

The spelling of 85145755 in words is "eighty-five million, one hundred forty-five thousand, seven hundred fifty-five".