2101045 has 16 divisors (see below), whose sum is σ = 2662128. Its totient is φ = 1589760.

The previous prime is 2101019. The next prime is 2101051. The reversal of 2101045 is 5401012.

It can be written as a sum of positive squares in 8 ways, for example, as 188356 + 1912689 = 434^2 + 1383^2 .

It is not a de Polignac number, because 2101045 - 2⁹ = 2100533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7447 + ... + 7723.

It is an arithmetic number, because the mean of its divisors is an integer number (166383).

2^2101045 is an apocalyptic number.

It is an amenable number.

2101045 is a deficient number, since it is larger than the sum of its proper divisors (561083).

2101045 is a wasteful number, since it uses less digits than its factorization.

2101045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2101045 is about 1449.4981890296. The cubic root of 2101045 is about 128.0791543292.

Adding to 2101045 its reverse (5401012), we get a palindrome (7502057).

The spelling of 2101045 in words is "two million, one hundred one thousand, forty-five".