210260161 has 2 divisors, whose sum is σ = 210260162. Its totient is φ = 210260160.

The previous prime is 210260147. The next prime is 210260173. The reversal of 210260161 is 161062012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209091600 + 1168561 = 14460^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 210260161 - 2⁷ = 210260033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210260111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105130080 + 105130081.

It is an arithmetic number, because the mean of its divisors is an integer number (105130081).

Almost surely, 2^210260161 is an apocalyptic number.

It is an amenable number.

210260161 is a deficient number, since it is larger than the sum of its proper divisors (1).

210260161 is an equidigital number, since it uses as much as digits as its factorization.

210260161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 210260161 is about 14500.3503750771. The cubic root of 210260161 is about 594.6375505995.

The spelling of 210260161 in words is "two hundred ten million, two hundred sixty thousand, one hundred sixty-one".