2081775 has 24 divisors (see below), whose sum is σ = 3531024. Its totient is φ = 1081600.

The previous prime is 2081749. The next prime is 2081777. The reversal of 2081775 is 5771802.

It is a happy number.

It is not a de Polignac number, because 2081775 - 2⁷ = 2081647 is a prime.

2081775 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2737 + ... + 3413.

It is an arithmetic number, because the mean of its divisors is an integer number (147126).

2^2081775 is an apocalyptic number.

2081775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2081775 is a deficient number, since it is larger than the sum of its proper divisors (1449249).

2081775 is a wasteful number, since it uses less digits than its factorization.

2081775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 2081775 is about 1442.8357494878. The cubic root of 2081775 is about 127.6863863749.

The spelling of 2081775 in words is "two million, eighty-one thousand, seven hundred seventy-five".