2523523 has 4 divisors (see below), whose sum is σ = 2656360. Its totient is φ = 2390688.

The previous prime is 2523517. The next prime is 2523527. The reversal of 2523523 is 3253252.

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 2523523 - 2⁹ = 2523011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2523494 and 2523503.

It is not an unprimeable number, because it can be changed into a prime (2523527) 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, 66390 + ... + 66427.

It is an arithmetic number, because the mean of its divisors is an integer number (664090).

2^2523523 is an apocalyptic number.

2523523 is a deficient number, since it is larger than the sum of its proper divisors (132837).

2523523 is a wasteful number, since it uses less digits than its factorization.

2523523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132836.

The product of its digits is 1800, while the sum is 22.

The square root of 2523523 is about 1588.5600397845. The cubic root of 2523523 is about 136.1452276489.

Adding to 2523523 its reverse (3253252), we get a palindrome (5776775).

The spelling of 2523523 in words is "two million, five hundred twenty-three thousand, five hundred twenty-three".