2056545 has 24 divisors (see below), whose sum is σ = 3721536. Its totient is φ = 1048608.

The previous prime is 2056517. The next prime is 2056547. The reversal of 2056545 is 5456502.

2056545 is a `hidden beast` number, since 2 + 0 + 5 + 654 + 5 = 666.

It is not a de Polignac number, because 2056545 - 2⁸ = 2056289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2056547) 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 in 23 ways as a sum of consecutive naturals, for example, 42 + ... + 2028.

It is an arithmetic number, because the mean of its divisors is an integer number (155064).

2^2056545 is an apocalyptic number.

It is an amenable number.

2056545 is a deficient number, since it is larger than the sum of its proper divisors (1664991).

2056545 is a wasteful number, since it uses less digits than its factorization.

2056545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2056545 is about 1434.0658980674. The cubic root of 2056545 is about 127.1684581220.

It can be divided in two parts, 2056 and 545, that added together give a square (2601 = 51²).

The spelling of 2056545 in words is "two million, fifty-six thousand, five hundred forty-five".