85244197 has 2 divisors, whose sum is σ = 85244198. Its totient is φ = 85244196.

The previous prime is 85244183. The next prime is 85244209. The reversal of 85244197 is 79144258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77986561 + 7257636 = 8831^2 + 2694^2 .

It is a cyclic number.

It is not a de Polignac number, because 85244197 - 2¹¹ = 85242149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85244177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42622098 + 42622099.

It is an arithmetic number, because the mean of its divisors is an integer number (42622099).

Almost surely, 2^85244197 is an apocalyptic number.

It is an amenable number.

85244197 is a deficient number, since it is larger than the sum of its proper divisors (1).

85244197 is an equidigital number, since it uses as much as digits as its factorization.

85244197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 85244197 is about 9232.7784008932. The cubic root of 85244197 is about 440.1036205678.

It can be divided in two parts, 8524 and 4197, that added together give a palindrome (12721).

The spelling of 85244197 in words is "eighty-five million, two hundred forty-four thousand, one hundred ninety-seven".