2530643 has 4 divisors (see below), whose sum is σ = 2592408. Its totient is φ = 2468880.

The previous prime is 2530597. The next prime is 2530663. The reversal of 2530643 is 3460352.

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

It is a cyclic number.

It is not a de Polignac number, because 2530643 - 2⁶ = 2530579 is a prime.

It is a super-3 number, since 3×2530643³ = 48619882423331273121, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁹ + 3² + 0 + 6⁶ + 4 + 3⁸ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2530663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30821 + ... + 30902.

It is an arithmetic number, because the mean of its divisors is an integer number (648102).

2^2530643 is an apocalyptic number.

2530643 is a deficient number, since it is larger than the sum of its proper divisors (61765).

2530643 is an equidigital number, since it uses as much as digits as its factorization.

2530643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61764.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 2530643 is about 1590.7994845360. The cubic root of 2530643 is about 136.2731498414.

Adding to 2530643 its reverse (3460352), we get a palindrome (5990995).

The spelling of 2530643 in words is "two million, five hundred thirty thousand, six hundred forty-three".