166101517 has 2 divisors, whose sum is σ = 166101518. Its totient is φ = 166101516.

The previous prime is 166101511. The next prime is 166101541. The reversal of 166101517 is 715101661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160503561 + 5597956 = 12669^2 + 2366^2 .

It is an emirp because it is prime and its reverse (715101661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166101517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166101511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83050758 + 83050759.

It is an arithmetic number, because the mean of its divisors is an integer number (83050759).

Almost surely, 2^166101517 is an apocalyptic number.

It is an amenable number.

166101517 is a deficient number, since it is larger than the sum of its proper divisors (1).

166101517 is an equidigital number, since it uses as much as digits as its factorization.

166101517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 166101517 is about 12888.0377482377. The cubic root of 166101517 is about 549.6984760494.

The spelling of 166101517 in words is "one hundred sixty-six million, one hundred one thousand, five hundred seventeen".