2530645 has 8 divisors (see below), whose sum is σ = 3270456. Its totient is φ = 1868736.

The previous prime is 2530597. The next prime is 2530663. The reversal of 2530645 is 5460352.

It can be written as a sum of positive squares in 4 ways, for example, as 152881 + 2377764 = 391^2 + 1542^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2530645 - 2¹⁵ = 2497877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19402 + ... + 19531.

It is an arithmetic number, because the mean of its divisors is an integer number (408807).

2^2530645 is an apocalyptic number.

It is an amenable number.

2530645 is a deficient number, since it is larger than the sum of its proper divisors (739811).

2530645 is a wasteful number, since it uses less digits than its factorization.

2530645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38951.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2530645 is about 1590.8001131506. The cubic root of 2530645 is about 136.2731857409.

Adding to 2530645 its reverse (5460352), we get a palindrome (7990997).

The spelling of 2530645 in words is "two million, five hundred thirty thousand, six hundred forty-five".