2172497 has 2 divisors, whose sum is σ = 2172498. Its totient is φ = 2172496.

The previous prime is 2172491. The next prime is 2172539. The reversal of 2172497 is 7942712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1957201 + 215296 = 1399^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172497 - 2⁶ = 2172433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2172491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086248 + 1086249.

It is an arithmetic number, because the mean of its divisors is an integer number (1086249).

2^2172497 is an apocalyptic number.

It is an amenable number.

2172497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172497 is an equidigital number, since it uses as much as digits as its factorization.

2172497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 32.

The square root of 2172497 is about 1473.9392796177. The cubic root of 2172497 is about 129.5148981831.

The spelling of 2172497 in words is "two million, one hundred seventy-two thousand, four hundred ninety-seven".