2811045 has 16 divisors (see below), whose sum is σ = 4525632. Its totient is φ = 1489920.

The previous prime is 2811041. The next prime is 2811073. The reversal of 2811045 is 5401182.

2811045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2811045 - 2² = 2811041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2811041) 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 15 ways as a sum of consecutive naturals, for example, 2410 + ... + 3380.

It is an arithmetic number, because the mean of its divisors is an integer number (282852).

2^2811045 is an apocalyptic number.

It is an amenable number.

2811045 is a deficient number, since it is larger than the sum of its proper divisors (1714587).

2811045 is a wasteful number, since it uses less digits than its factorization.

2811045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2811045 is about 1676.6171298183. The cubic root of 2811045 is about 141.1310586681.

It can be divided in two parts, 281 and 1045, that added together give a triangular number (1326 = T₅₁).

The spelling of 2811045 in words is "two million, eight hundred eleven thousand, forty-five".