210164441 has 2 divisors, whose sum is σ = 210164442. Its totient is φ = 210164440.

The previous prime is 210164389. The next prime is 210164467. The reversal of 210164441 is 144461012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201044041 + 9120400 = 14179^2 + 3020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210164441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210164341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105082220 + 105082221.

It is an arithmetic number, because the mean of its divisors is an integer number (105082221).

Almost surely, 2^210164441 is an apocalyptic number.

It is an amenable number.

210164441 is a deficient number, since it is larger than the sum of its proper divisors (1).

210164441 is an equidigital number, since it uses as much as digits as its factorization.

210164441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 210164441 is about 14497.0493894447. The cubic root of 210164441 is about 594.5473015392.

The spelling of 210164441 in words is "two hundred ten million, one hundred sixty-four thousand, four hundred forty-one".