85056247 has 2 divisors, whose sum is σ = 85056248.
Its totient is φ = 85056246.
The previous prime is 85056221. The next prime is 85056259. The reversal of 85056247 is 74265058.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 85056247 - 211 = 85054199 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (85050247) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42528123 + 42528124.
It is an arithmetic number, because the mean of its divisors is an integer number (42528124).
Almost surely, 285056247 is an apocalyptic number.
85056247 is a deficient number, since it is larger than the sum of its proper divisors (1).
85056247 is an equidigital number, since it uses as much as digits as its factorization.
85056247 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 67200, while the sum is 37.
The square root of 85056247 is about 9222.5943746866.
The cubic root of 85056247 is about 439.7799295484.
The spelling of 85056247 in words is "eighty-five million, fifty-six thousand, two hundred forty-seven".