2523524321 has 4 divisors (see below), whose sum is σ = 2524237332. Its totient is φ = 2522811312.

The previous prime is 2523524317. The next prime is 2523524389. The reversal of 2523524321 is 1234253252.

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 404211025 + 2119313296 = 20105^2 + 46036^2 .

It is a cyclic number.

It is not a de Polignac number, because 2523524321 - 2² = 2523524317 is a prime.

It is a super-2 number, since 2×2523524321² = 12736349997357022082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2523524021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351170 + ... + 358283.

It is an arithmetic number, because the mean of its divisors is an integer number (631059333).

Almost surely, 2^2523524321 is an apocalyptic number.

It is an amenable number.

2523524321 is a deficient number, since it is larger than the sum of its proper divisors (713011).

2523524321 is an equidigital number, since it uses as much as digits as its factorization.

2523524321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713010.

The product of its digits is 14400, while the sum is 29.

The square root of 2523524321 is about 50234.6924047515. The cubic root of 2523524321 is about 1361.4525140505.

Adding to 2523524321 its reverse (1234253252), we get a palindrome (3757777573).

The spelling of 2523524321 in words is "two billion, five hundred twenty-three million, five hundred twenty-four thousand, three hundred twenty-one".