2523613 has 4 divisors (see below), whose sum is σ = 2540700. Its totient is φ = 2506528.

The previous prime is 2523593. The next prime is 2523641. The reversal of 2523613 is 3163252.

2523613 is nontrivially palindromic in base 9.

2523613 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 558009 + 1965604 = 747^2 + 1402^2 .

It is a cyclic number.

It is not a de Polignac number, because 2523613 - 2⁵ = 2523581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523643) by changing a digit.

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, 8320 + ... + 8617.

It is an arithmetic number, because the mean of its divisors is an integer number (635175).

2^2523613 is an apocalyptic number.

It is an amenable number.

2523613 is a deficient number, since it is larger than the sum of its proper divisors (17087).

2523613 is a wasteful number, since it uses less digits than its factorization.

2523613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17086.

The product of its digits is 1080, while the sum is 22.

The square root of 2523613 is about 1588.5883670731. The cubic root of 2523613 is about 136.1468461434.

Adding to 2523613 its reverse (3163252), we get a palindrome (5686865).

It can be divided in two parts, 2523 and 613, that added together give a square (3136 = 56²).

The spelling of 2523613 in words is "two million, five hundred twenty-three thousand, six hundred thirteen".