4161549 has 16 divisors (see below), whose sum is σ = 6715008. Its totient is φ = 2237952.

The previous prime is 4161539. The next prime is 4161557. The reversal of 4161549 is 9451614.

It is a happy number.

It is not a de Polignac number, because 4161549 - 2¹¹ = 4159501 is a prime.

It is a Curzon number.

4161549 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5472 + ... + 6185.

It is an arithmetic number, because the mean of its divisors is an integer number (419688).

Almost surely, 2^4161549 is an apocalyptic number.

It is an amenable number.

4161549 is a deficient number, since it is larger than the sum of its proper divisors (2553459).

4161549 is a wasteful number, since it uses less digits than its factorization.

4161549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11684.

The product of its digits is 4320, while the sum is 30.

The square root of 4161549 is about 2039.9874999617. The cubic root of 4161549 is about 160.8489897389.

The spelling of 4161549 in words is "four million, one hundred sixty-one thousand, five hundred forty-nine".