85471783 has 2 divisors, whose sum is σ = 85471784. Its totient is φ = 85471782.

The previous prime is 85471781. The next prime is 85471811. The reversal of 85471783 is 38717458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85471783 - 2¹ = 85471781 is a prime.

Together with 85471781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85471781) 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 as a sum of consecutive naturals, namely, 42735891 + 42735892.

It is an arithmetic number, because the mean of its divisors is an integer number (42735892).

Almost surely, 2^85471783 is an apocalyptic number.

85471783 is a deficient number, since it is larger than the sum of its proper divisors (1).

85471783 is an equidigital number, since it uses as much as digits as its factorization.

85471783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 43.

The square root of 85471783 is about 9245.0950779319. The cubic root of 85471783 is about 440.4949372035.

The spelling of 85471783 in words is "eighty-five million, four hundred seventy-one thousand, seven hundred eighty-three".