2053490 has 32 divisors (see below), whose sum is σ = 3916080. Its totient is φ = 774144.

The previous prime is 2053459. The next prime is 2053507. The reversal of 2053490 is 943502.

It is a Cunningham number, because it is equal to 1433²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 923521 + 1129969 = 961^2 + 1063^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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, 21122 + ... + 21218.

2^2053490 is an apocalyptic number.

2053490 is a deficient number, since it is larger than the sum of its proper divisors (1862590).

2053490 is a wasteful number, since it uses less digits than its factorization.

2053490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2053490 is about 1433.0003489183. Note that the first 3 decimals coincide. The cubic root of 2053490 is about 127.1054572847.

Adding to 2053490 its reverse (943502), we get a palindrome (2996992).

The spelling of 2053490 in words is "two million, fifty-three thousand, four hundred ninety".