85245271 has 2 divisors, whose sum is σ = 85245272. Its totient is φ = 85245270.

The previous prime is 85245269. The next prime is 85245283. The reversal of 85245271 is 17254258.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85245271 - 2¹ = 85245269 is a prime.

Together with 85245269, it forms a pair of twin primes.

It is equal to p_4957081 and since 85245271 and 4957081 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85245211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42622635 + 42622636.

It is an arithmetic number, because the mean of its divisors is an integer number (42622636).

Almost surely, 2^85245271 is an apocalyptic number.

85245271 is a deficient number, since it is larger than the sum of its proper divisors (1).

85245271 is an equidigital number, since it uses as much as digits as its factorization.

85245271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 34.

The square root of 85245271 is about 9232.8365630504. The cubic root of 85245271 is about 440.1054688629.

The spelling of 85245271 in words is "eighty-five million, two hundred forty-five thousand, two hundred seventy-one".