2081145 has 16 divisors (see below), whose sum is σ = 3632832. Its totient is φ = 1008960.

The previous prime is 2081129. The next prime is 2081147. The reversal of 2081145 is 5411802.

It is not a de Polignac number, because 2081145 - 2⁴ = 2081129 is a prime.

It is a super-2 number, since 2×2081145² = 8662329022050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6142 + ... + 6471.

It is an arithmetic number, because the mean of its divisors is an integer number (227052).

2^2081145 is an apocalyptic number.

It is an amenable number.

2081145 is a deficient number, since it is larger than the sum of its proper divisors (1551687).

2081145 is a wasteful number, since it uses less digits than its factorization.

2081145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12632.

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

The square root of 2081145 is about 1442.6174128992. The cubic root of 2081145 is about 127.6735046531.

Adding to 2081145 its reverse (5411802), we get a palindrome (7492947).

The spelling of 2081145 in words is "two million, eighty-one thousand, one hundred forty-five".