2106545 has 16 divisors (see below), whose sum is σ = 2916480. Its totient is φ = 1430784.

The previous prime is 2106529. The next prime is 2106551. The reversal of 2106545 is 5456012.

It is a cyclic number.

It is not a de Polignac number, because 2106545 - 2⁴ = 2106529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2106545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4649 + ... + 5081.

It is an arithmetic number, because the mean of its divisors is an integer number (182280).

2^2106545 is an apocalyptic number.

It is an amenable number.

2106545 is a deficient number, since it is larger than the sum of its proper divisors (809935).

2106545 is a wasteful number, since it uses less digits than its factorization.

2106545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2106545 is about 1451.3941573535. The cubic root of 2106545 is about 128.1908164725.

The spelling of 2106545 in words is "two million, one hundred six thousand, five hundred forty-five".