85272197 has 2 divisors, whose sum is σ = 85272198. Its totient is φ = 85272196.

The previous prime is 85272181. The next prime is 85272233. The reversal of 85272197 is 79127258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84015556 + 1256641 = 9166^2 + 1121^2 .

It is a cyclic number.

It is not a de Polignac number, because 85272197 - 2⁴ = 85272181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85272137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42636098 + 42636099.

It is an arithmetic number, because the mean of its divisors is an integer number (42636099).

Almost surely, 2^85272197 is an apocalyptic number.

It is an amenable number.

85272197 is a deficient number, since it is larger than the sum of its proper divisors (1).

85272197 is an equidigital number, since it uses as much as digits as its factorization.

85272197 is an odious number, because the sum of its binary digits is odd.

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

The square root of 85272197 is about 9234.2946130173. The cubic root of 85272197 is about 440.1518019605.

The spelling of 85272197 in words is "eighty-five million, two hundred seventy-two thousand, one hundred ninety-seven".