2523623 has 4 divisors (see below), whose sum is σ = 2534688. Its totient is φ = 2512560.

The previous prime is 2523593. The next prime is 2523641. The reversal of 2523623 is 3263252.

It is a happy number.

2523623 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2523623 is a prime.

It is a super-2 number, since 2×2523623² = 12737346092258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹² + 5⁹ + 2¹⁴ + 3⁷ + 6 + 2¹⁴ + 3¹² .

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, 5183 + ... + 5648.

It is an arithmetic number, because the mean of its divisors is an integer number (633672).

2^2523623 is an apocalyptic number.

2523623 is a deficient number, since it is larger than the sum of its proper divisors (11065).

2523623 is a wasteful number, since it uses less digits than its factorization.

2523623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11064.

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

The square root of 2523623 is about 1588.5915145184. The cubic root of 2523623 is about 136.1470259738.

Adding to 2523623 its reverse (3263252), we get a palindrome (5786875).

The spelling of 2523623 in words is "two million, five hundred twenty-three thousand, six hundred twenty-three".