85553447 has 16 divisors (see below), whose sum is σ = 103330560. Its totient is φ = 69196032.

The previous prime is 85553441. The next prime is 85553449. The reversal of 85553447 is 74435558.

It is a cyclic number.

It is not a de Polignac number, because 85553447 - 2⁴ = 85553431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85553441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 36503 + ... + 38775.

It is an arithmetic number, because the mean of its divisors is an integer number (6458160).

Almost surely, 2^85553447 is an apocalyptic number.

85553447 is a deficient number, since it is larger than the sum of its proper divisors (17777113).

85553447 is a wasteful number, since it uses less digits than its factorization.

85553447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582.

The product of its digits is 336000, while the sum is 41.

The square root of 85553447 is about 9249.5106357039. The cubic root of 85553447 is about 440.6351828172.

The spelling of 85553447 in words is "eighty-five million, five hundred fifty-three thousand, four hundred forty-seven".