2521045307 has 4 divisors (see below), whose sum is σ = 2750231256. Its totient is φ = 2291859360.

The previous prime is 2521045253. The next prime is 2521045309. The reversal of 2521045307 is 7035401252.

It is a happy number.

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 2521045307 - 2²⁸ = 2252609851 is a prime.

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 2521045307.

It is not an unprimeable number, because it can be changed into a prime (2521045309) 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, 114592958 + ... + 114592979.

It is an arithmetic number, because the mean of its divisors is an integer number (687557814).

Almost surely, 2^2521045307 is an apocalyptic number.

2521045307 is a deficient number, since it is larger than the sum of its proper divisors (229185949).

2521045307 is a wasteful number, since it uses less digits than its factorization.

2521045307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229185948.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 2521045307 is about 50210.0120195166. The cubic root of 2521045307 is about 1361.0065549878.

Adding to 2521045307 its reverse (7035401252), we get a palindrome (9556446559).

The spelling of 2521045307 in words is "two billion, five hundred twenty-one million, forty-five thousand, three hundred seven".