3166549 has 2 divisors, whose sum is σ = 3166550. Its totient is φ = 3166548.

The previous prime is 3166547. The next prime is 3166561. The reversal of 3166549 is 9456613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2196324 + 970225 = 1482^2 + 985^2 .

It is an emirp because it is prime and its reverse (9456613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3166549 - 2¹ = 3166547 is a prime.

Together with 3166547, it forms a pair of twin primes.

3166549 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3166543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1583274 + 1583275.

It is an arithmetic number, because the mean of its divisors is an integer number (1583275).

Almost surely, 2^3166549 is an apocalyptic number.

It is an amenable number.

3166549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3166549 is an equidigital number, since it uses as much as digits as its factorization.

3166549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 34.

The square root of 3166549 is about 1779.4799802189. The cubic root of 3166549 is about 146.8459830409.

Subtracting 3166549 from its reverse (9456613), we obtain a square (6290064 = 2508²).

The spelling of 3166549 in words is "three million, one hundred sixty-six thousand, five hundred forty-nine".