166410253 has 2 divisors, whose sum is σ = 166410254. Its totient is φ = 166410252.

The previous prime is 166410247. The next prime is 166410281. The reversal of 166410253 is 352014661.

166410253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (166410281) can be obtained adding 166410253 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125731369 + 40678884 = 11213^2 + 6378^2 .

It is an emirp because it is prime and its reverse (352014661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166410253 - 2⁹ = 166409741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166410353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83205126 + 83205127.

It is an arithmetic number, because the mean of its divisors is an integer number (83205127).

Almost surely, 2^166410253 is an apocalyptic number.

It is an amenable number.

166410253 is a deficient number, since it is larger than the sum of its proper divisors (1).

166410253 is an equidigital number, since it uses as much as digits as its factorization.

166410253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 166410253 is about 12900.0098061978. The cubic root of 166410253 is about 550.0388435376.

The spelling of 166410253 in words is "one hundred sixty-six million, four hundred ten thousand, two hundred fifty-three".