2521023530 has 8 divisors (see below), whose sum is σ = 4537842372. Its totient is φ = 1008409408.

The previous prime is 2521023511. The next prime is 2521023541. The reversal of 2521023530 is 353201252.

It can be written as a sum of positive squares in 2 ways, for example, as 2512315129 + 8708401 = 50123^2 + 2951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2521023496 and 2521023505.

It is an unprimeable number.

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, 126051167 + ... + 126051186.

Almost surely, 2^2521023530 is an apocalyptic number.

2521023530 is a deficient number, since it is larger than the sum of its proper divisors (2016818842).

2521023530 is a wasteful number, since it uses less digits than its factorization.

2521023530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252102360.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2521023530 is about 50209.7951599088. The cubic root of 2521023530 is about 1361.0026361471.

Adding to 2521023530 its reverse (353201252), we get a palindrome (2874224782).

The spelling of 2521023530 in words is "two billion, five hundred twenty-one million, twenty-three thousand, five hundred thirty".