85422247 has 2 divisors, whose sum is σ = 85422248. Its totient is φ = 85422246.

The previous prime is 85422221. The next prime is 85422257. The reversal of 85422247 is 74222458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85422247 - 2¹¹ = 85420199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85422217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42711123 + 42711124.

It is an arithmetic number, because the mean of its divisors is an integer number (42711124).

Almost surely, 2^85422247 is an apocalyptic number.

85422247 is a deficient number, since it is larger than the sum of its proper divisors (1).

85422247 is an equidigital number, since it uses as much as digits as its factorization.

85422247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 34.

The square root of 85422247 is about 9242.4156474376. The cubic root of 85422247 is about 440.4098230555.

The spelling of 85422247 in words is "eighty-five million, four hundred twenty-two thousand, two hundred forty-seven".