2530909 has 8 divisors (see below), whose sum is σ = 2731320. Its totient is φ = 2337088.

The previous prime is 2530907. The next prime is 2530921. The reversal of 2530909 is 9090352.

It can be written as a sum of positive squares in 4 ways, for example, as 562500 + 1968409 = 750^2 + 1403^2 .

It is not a de Polignac number, because 2530909 - 2¹ = 2530907 is a prime.

It is a Duffinian number.

2530909 is a modest number, since divided by 909 gives 253 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530907) 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 7 ways as a sum of consecutive naturals, for example, 47727 + ... + 47779.

It is an arithmetic number, because the mean of its divisors is an integer number (341415).

2^2530909 is an apocalyptic number.

It is an amenable number.

2530909 is a deficient number, since it is larger than the sum of its proper divisors (200411).

2530909 is an frugal number, since it uses more digits than its factorization.

2530909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 2530909 is about 1590.8830880992. The cubic root of 2530909 is about 136.2779243049.

The spelling of 2530909 in words is "two million, five hundred thirty thousand, nine hundred nine".