85074547 has 4 divisors (see below), whose sum is σ = 86151520. Its totient is φ = 83997576.

The previous prime is 85074499. The next prime is 85074553. The reversal of 85074547 is 74547058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74547058 = 2 ⋅37273529.

It is a cyclic number.

It is not a de Polignac number, because 85074547 - 2¹⁵ = 85041779 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85074557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538368 + ... + 538525.

It is an arithmetic number, because the mean of its divisors is an integer number (21537880).

Almost surely, 2^85074547 is an apocalyptic number.

85074547 is a deficient number, since it is larger than the sum of its proper divisors (1076973).

85074547 is a wasteful number, since it uses less digits than its factorization.

85074547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076972.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 85074547 is about 9223.5864499662. The cubic root of 85074547 is about 439.8114670932.

The spelling of 85074547 in words is "eighty-five million, seventy-four thousand, five hundred forty-seven".