2117147 has 2 divisors, whose sum is σ = 2117148. Its totient is φ = 2117146.

The previous prime is 2117131. The next prime is 2117179. The reversal of 2117147 is 7417112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2117147 - 2⁴ = 2117131 is a prime.

It is a super-2 number, since 2×2117147² = 8964622839218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2117447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058573 + 1058574.

It is an arithmetic number, because the mean of its divisors is an integer number (1058574).

2^2117147 is an apocalyptic number.

2117147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117147 is an equidigital number, since it uses as much as digits as its factorization.

2117147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 392, while the sum is 23.

The square root of 2117147 is about 1455.0419237946. The cubic root of 2117147 is about 128.4055132644.

The spelling of 2117147 in words is "two million, one hundred seventeen thousand, one hundred forty-seven".