166852417 has 2 divisors, whose sum is σ = 166852418. Its totient is φ = 166852416.

The previous prime is 166852409. The next prime is 166852421. The reversal of 166852417 is 714258661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152744881 + 14107536 = 12359^2 + 3756^2 .

It is a cyclic number.

It is not a de Polignac number, because 166852417 - 2³ = 166852409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166852417.

It is not a weakly prime, because it can be changed into another prime (166852487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83426208 + 83426209.

It is an arithmetic number, because the mean of its divisors is an integer number (83426209).

Almost surely, 2^166852417 is an apocalyptic number.

It is an amenable number.

166852417 is a deficient number, since it is larger than the sum of its proper divisors (1).

166852417 is an equidigital number, since it uses as much as digits as its factorization.

166852417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 166852417 is about 12917.1365634958. The cubic root of 166852417 is about 550.5255769405.

The spelling of 166852417 in words is "one hundred sixty-six million, eight hundred fifty-two thousand, four hundred seventeen".