2530505 has 4 divisors (see below), whose sum is σ = 3036612. Its totient is φ = 2024400.

The previous prime is 2530487. The next prime is 2530513. The reversal of 2530505 is 5050352.

2530505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 425104 + 2105401 = 652^2 + 1451^2 .

It is not a de Polignac number, because 2530505 - 2⁶ = 2530441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 253046 + ... + 253055.

It is an arithmetic number, because the mean of its divisors is an integer number (759153).

2^2530505 is an apocalyptic number.

It is an amenable number.

2530505 is a deficient number, since it is larger than the sum of its proper divisors (506107).

2530505 is an equidigital number, since it uses as much as digits as its factorization.

2530505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506106.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 2530505 is about 1590.7561095278. The cubic root of 2530505 is about 136.2706727323.

Adding to 2530505 its reverse (5050352), we get a palindrome (7580857).

The spelling of 2530505 in words is "two million, five hundred thirty thousand, five hundred five".