8172497 has 2 divisors, whose sum is σ = 8172498. Its totient is φ = 8172496.

The previous prime is 8172491. The next prime is 8172511. The reversal of 8172497 is 7942718.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8116801 + 55696 = 2849^2 + 236^2 .

It is a cyclic number.

It is not a de Polignac number, because 8172497 - 2⁴ = 8172481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8172497.

It is not a weakly prime, because it can be changed into another prime (8172491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4086248 + 4086249.

It is an arithmetic number, because the mean of its divisors is an integer number (4086249).

Almost surely, 2^8172497 is an apocalyptic number.

It is an amenable number.

8172497 is a deficient number, since it is larger than the sum of its proper divisors (1).

8172497 is an equidigital number, since it uses as much as digits as its factorization.

8172497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 8172497 is about 2858.7579470812. The cubic root of 8172497 is about 201.4272653394.

The spelling of 8172497 in words is "eight million, one hundred seventy-two thousand, four hundred ninety-seven".