2520523 has 4 divisors (see below), whose sum is σ = 2527488. Its totient is φ = 2513560.

The previous prime is 2520503. The next prime is 2520577. The reversal of 2520523 is 3250252.

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 2520523 - 2⁵ = 2520491 is a prime.

It is a d-powerful number, because it can be written as 2³ + 5⁶ + 2¹⁴ + 0 + 5⁸ + 2²¹ + 3⁶ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2520523.

It is not an unprimeable number, because it can be changed into a prime (2520503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2908 + ... + 3673.

It is an arithmetic number, because the mean of its divisors is an integer number (631872).

2^2520523 is an apocalyptic number.

2520523 is a deficient number, since it is larger than the sum of its proper divisors (6965).

2520523 is an equidigital number, since it uses as much as digits as its factorization.

2520523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6964.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 2520523 is about 1587.6155076088. The cubic root of 2520523 is about 136.0912557953.

Adding to 2520523 its reverse (3250252), we get a palindrome (5770775).

The spelling of 2520523 in words is "two million, five hundred twenty thousand, five hundred twenty-three".