2056549 has 4 divisors (see below), whose sum is σ = 2243520. Its totient is φ = 1869580.

The previous prime is 2056547. The next prime is 2056553. The reversal of 2056549 is 9456502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2056549 - 2¹ = 2056547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2056549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93469 + ... + 93490.

It is an arithmetic number, because the mean of its divisors is an integer number (560880).

2^2056549 is an apocalyptic number.

It is an amenable number.

2056549 is a deficient number, since it is larger than the sum of its proper divisors (186971).

2056549 is a wasteful number, since it uses less digits than its factorization.

2056549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186970.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 2056549 is about 1434.0672927028. The cubic root of 2056549 is about 127.1685405699.

The spelling of 2056549 in words is "two million, fifty-six thousand, five hundred forty-nine".