2513604745 has 4 divisors (see below), whose sum is σ = 3016325700. Its totient is φ = 2010883792.

The previous prime is 2513604721. The next prime is 2513604757. The reversal of 2513604745 is 5474063152.

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 309865609 + 2203739136 = 17603^2 + 46944^2 .

It is a cyclic number.

It is not a de Polignac number, because 2513604745 - 2¹⁷ = 2513473673 is a prime.

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, 251360470 + ... + 251360479.

It is an arithmetic number, because the mean of its divisors is an integer number (754081425).

Almost surely, 2^2513604745 is an apocalyptic number.

It is an amenable number.

2513604745 is a deficient number, since it is larger than the sum of its proper divisors (502720955).

2513604745 is an equidigital number, since it uses as much as digits as its factorization.

2513604745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502720954.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 2513604745 is about 50135.8628628250. The cubic root of 2513604745 is about 1359.6662865249. Note that the first 3 decimals are identical.

Adding to 2513604745 its reverse (5474063152), we get a palindrome (7987667897).

The spelling of 2513604745 in words is "two billion, five hundred thirteen million, six hundred four thousand, seven hundred forty-five".