85197227 has 2 divisors, whose sum is σ = 85197228. Its totient is φ = 85197226.

The previous prime is 85197193. The next prime is 85197257. The reversal of 85197227 is 72279158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85197227 - 2⁶ = 85197163 is a prime.

It is equal to p_4954469 and since 85197227 and 4954469 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (85197257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42598613 + 42598614.

It is an arithmetic number, because the mean of its divisors is an integer number (42598614).

Almost surely, 2^85197227 is an apocalyptic number.

85197227 is a deficient number, since it is larger than the sum of its proper divisors (1).

85197227 is an equidigital number, since it uses as much as digits as its factorization.

85197227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 41.

The square root of 85197227 is about 9230.2343957237. The cubic root of 85197227 is about 440.0227725817.

The spelling of 85197227 in words is "eighty-five million, one hundred ninety-seven thousand, two hundred twenty-seven".