2061549 has 24 divisors (see below), whose sum is σ = 3486912. Its totient is φ = 1149120.

The previous prime is 2061533. The next prime is 2061551. The reversal of 2061549 is 9451602.

2061549 is a `hidden beast` number, since 2 + 0 + 615 + 49 = 666.

It is not a de Polignac number, because 2061549 - 2⁴ = 2061533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2329 + ... + 3089.

It is an arithmetic number, because the mean of its divisors is an integer number (145288).

2^2061549 is an apocalyptic number.

It is an amenable number.

2061549 is a deficient number, since it is larger than the sum of its proper divisors (1425363).

2061549 is a wasteful number, since it uses less digits than its factorization.

2061549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2061549 is about 1435.8095277578. The cubic root of 2061549 is about 127.2715169798.

The spelling of 2061549 in words is "two million, sixty-one thousand, five hundred forty-nine".