2005273 has 4 divisors (see below), whose sum is σ = 2023780. Its totient is φ = 1986768.

The previous prime is 2005261. The next prime is 2005277. The reversal of 2005273 is 3725002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3725002 = 2 ⋅1862501.

It can be written as a sum of positive squares in 2 ways, for example, as 1630729 + 374544 = 1277^2 + 612^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005273 - 2¹³ = 1997081 is a prime.

It is a super-2 number, since 2×2005273² = 8042239609058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2005273.

It is not an unprimeable number, because it can be changed into a prime (2005277) 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 3 ways as a sum of consecutive naturals, for example, 9090 + ... + 9307.

It is an arithmetic number, because the mean of its divisors is an integer number (505945).

2^2005273 is an apocalyptic number.

It is an amenable number.

2005273 is a deficient number, since it is larger than the sum of its proper divisors (18507).

2005273 is a wasteful number, since it uses less digits than its factorization.

2005273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18506.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 2005273 is about 1416.0766222207. The cubic root of 2005273 is about 126.1027338836.

It can be divided in two parts, 2005 and 273, that added together give a triangular number (2278 = T₆₇).

The spelling of 2005273 in words is "two million, five thousand, two hundred seventy-three".