8516197 has 2 divisors, whose sum is σ = 8516198. Its totient is φ = 8516196.

The previous prime is 8516177. The next prime is 8516213. The reversal of 8516197 is 7916158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8145316 + 370881 = 2854^2 + 609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8516197 is a prime.

It is a super-2 number, since 2×8516197² = 145051222685618, which contains 22 as substring.

8516197 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8516177) 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, 4258098 + 4258099.

It is an arithmetic number, because the mean of its divisors is an integer number (4258099).

Almost surely, 2^8516197 is an apocalyptic number.

It is an amenable number.

8516197 is a deficient number, since it is larger than the sum of its proper divisors (1).

8516197 is an equidigital number, since it uses as much as digits as its factorization.

8516197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 37.

The square root of 8516197 is about 2918.2523879884. The cubic root of 8516197 is about 204.2123014100.

It can be divided in two parts, 85161 and 97, that added together give a palindrome (85258).

The spelling of 8516197 in words is "eight million, five hundred sixteen thousand, one hundred ninety-seven".