85089247 has 2 divisors, whose sum is σ = 85089248. Its totient is φ = 85089246.

The previous prime is 85089209. The next prime is 85089271. The reversal of 85089247 is 74298058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85089247 - 2²³ = 76700639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85089047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42544623 + 42544624.

It is an arithmetic number, because the mean of its divisors is an integer number (42544624).

Almost surely, 2^85089247 is an apocalyptic number.

85089247 is a deficient number, since it is larger than the sum of its proper divisors (1).

85089247 is an equidigital number, since it uses as much as digits as its factorization.

85089247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 85089247 is about 9224.3832856186. The cubic root of 85089247 is about 439.8367972555.

The spelling of 85089247 in words is "eighty-five million, eighty-nine thousand, two hundred forty-seven".