166852057 has 4 divisors (see below), whose sum is σ = 167080420. Its totient is φ = 166623696.

The previous prime is 166852039. The next prime is 166852067. The reversal of 166852057 is 750258661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750258661 = 10957 ⋅68473.

It can be written as a sum of positive squares in 2 ways, for example, as 165353881 + 1498176 = 12859^2 + 1224^2 .

It is a cyclic number.

It is not a de Polignac number, because 166852057 - 2⁷ = 166851929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166852067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113082 + ... + 114547.

It is an arithmetic number, because the mean of its divisors is an integer number (41770105).

Almost surely, 2^166852057 is an apocalyptic number.

It is an amenable number.

166852057 is a deficient number, since it is larger than the sum of its proper divisors (228363).

166852057 is an equidigital number, since it uses as much as digits as its factorization.

166852057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228362.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 166852057 is about 12917.1226285114. The cubic root of 166852057 is about 550.5251810030.

The spelling of 166852057 in words is "one hundred sixty-six million, eight hundred fifty-two thousand, fifty-seven".