166057097 has 2 divisors, whose sum is σ = 166057098. Its totient is φ = 166057096.

The previous prime is 166057061. The next prime is 166057121. The reversal of 166057097 is 790750661.

166057097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129527161 + 36529936 = 11381^2 + 6044^2 .

It is an emirp because it is prime and its reverse (790750661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166057097 - 2¹⁰ = 166056073 is a prime.

It is not a weakly prime, because it can be changed into another prime (166057027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83028548 + 83028549.

It is an arithmetic number, because the mean of its divisors is an integer number (83028549).

Almost surely, 2^166057097 is an apocalyptic number.

It is an amenable number.

166057097 is a deficient number, since it is larger than the sum of its proper divisors (1).

166057097 is an equidigital number, since it uses as much as digits as its factorization.

166057097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 166057097 is about 12886.3143295513. The cubic root of 166057097 is about 549.6494703094.

The spelling of 166057097 in words is "one hundred sixty-six million, fifty-seven thousand, ninety-seven".