85145547 has 16 divisors (see below), whose sum is σ = 119313920. Its totient is φ = 53942112.

The previous prime is 85145539. The next prime is 85145549. The reversal of 85145547 is 74554158.

It is not a de Polignac number, because 85145547 - 2³ = 85145539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85145549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4147 + ... + 13692.

It is an arithmetic number, because the mean of its divisors is an integer number (7457120).

Almost surely, 2^85145547 is an apocalyptic number.

85145547 is a deficient number, since it is larger than the sum of its proper divisors (34168373).

85145547 is a wasteful number, since it uses less digits than its factorization.

85145547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17922.

The product of its digits is 112000, while the sum is 39.

The square root of 85145547 is about 9227.4344755192. The cubic root of 85145547 is about 439.9337830794.

The spelling of 85145547 in words is "eighty-five million, one hundred forty-five thousand, five hundred forty-seven".