166017127 has 2 divisors, whose sum is σ = 166017128. Its totient is φ = 166017126.

The previous prime is 166017097. The next prime is 166017133. The reversal of 166017127 is 721710661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166017127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166017167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83008563 + 83008564.

It is an arithmetic number, because the mean of its divisors is an integer number (83008564).

Almost surely, 2^166017127 is an apocalyptic number.

166017127 is a deficient number, since it is larger than the sum of its proper divisors (1).

166017127 is an equidigital number, since it uses as much as digits as its factorization.

166017127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 166017127 is about 12884.7633660848. The cubic root of 166017127 is about 549.6053664989.

Adding to 166017127 its reverse (721710661), we get a palindrome (887727788).

The spelling of 166017127 in words is "one hundred sixty-six million, seventeen thousand, one hundred twenty-seven".