2170549 has 2 divisors, whose sum is σ = 2170550. Its totient is φ = 2170548.

The previous prime is 2170537. The next prime is 2170573. The reversal of 2170549 is 9450712.

It is a happy number.

2170549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 1036324 = 1065^2 + 1018^2 .

It is a cyclic number.

It is not a de Polignac number, because 2170549 - 2¹¹ = 2168501 is a prime.

It is a super-2 number, since 2×2170549² = 9422565922802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2170529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085274 + 1085275.

It is an arithmetic number, because the mean of its divisors is an integer number (1085275).

2^2170549 is an apocalyptic number.

It is an amenable number.

2170549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170549 is an equidigital number, since it uses as much as digits as its factorization.

2170549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2170549 is about 1473.2783172232. The cubic root of 2170549 is about 129.4761761554.

The spelling of 2170549 in words is "two million, one hundred seventy thousand, five hundred forty-nine".